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Tunnel of Eupalinos

4.3
·2k reviews·, Greece

A 6th-century BC aqueduct tunnel, excavated from both ends, showcasing ancient Greek engineering brilliance.

Highlights

Highlights

Must-see attractions

Social content

Social

From TikTok & Reddit

Best Time

Early morning

Cooler temperatures & fewer crowds

CrowdLow
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pythagorio city on the back way

Tunnel of Eupalinos

Best Time

Early morning

Cooler temperatures & fewer crowds

CrowdLow
Highlights

Highlights

Must-see attractions

A 6th-century BC aqueduct tunnel, excavated from both ends, showcasing ancient Greek engineering brilliance.

4.3
(2k reviews)

"A must-visit for its incredible ancient engineering and cool escape from the Samos heat!"

Vertical photo
TIP

🎯 Go Early to Beat Heat

Arrive at opening time for cooler temps and fewer people. Taxi recommended for direct access.

👟 Wear Sturdy Shoes

The path can be uneven; comfortable, closed-toe shoes are essential for safety.

Third hero image

Quick Facts

Hours

Rating

4.3 · 1,750 reviews

Type

Historical Landmark

Highlights

Discover the most iconic attractions and experiences

The Engineering Marvel

The Engineering Marvel

Tunnel interior

Witness 6th-century BC ingenuity where engineers dug from both ends, meeting with remarkable accuracy.

Ancient Aqueduct System

Ancient Aqueduct System

Tunnel entrance and interior

Explore the 1,036-meter tunnel, a testament to ancient Greek water management and construction skills.

Panoramic Island Views

Panoramic Island Views

Path to/from the tunnel

Enjoy breathtaking views of Samos and Pythagoreio as you ascend or descend the path.

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Planning Your Visit

Beat the Heat and Crowds

Start your visit early, ideally when it opens, to avoid the midday sun and potential crowds. The tunnel offers a cool respite, but the walk to and from can be hot. Wear comfortable shoes as some areas might be uneven.

History Buffs, Prepare!

While a guide accompanies you, they aren't information specialists. Research the Tunnel of Eupalinos beforehand to fully appreciate this ancient engineering marvel. Consider the €10 entrance fee for a unique historical experience.

Best Times

When
Early morning
Why
Cooler temperatures & fewer crowds
Crowd
Low
When
Late afternoon
Why
Golden hour light
Crowd
Medium

Insider Tips

from TikTok, Instagram & Reddit

The Tunnel of Eupalinos or Eupalinian aqueduct (Greek: Ευπαλίνιον όρυγμα) is a tunnel of 1,036 m (3,399 ft) length running through Mount Kastro in Samos, Greece, built in the 6th century BC to serve as an aqueduct. The tunnel is the second known tunnel in history which was excavated from both ends (Ancient Greek: ἀμφίστομον, romanized: amphistomon, "having two openings"), and the first with a geom...
nautical_odyssey
24 likes • 502 views

🎯 Go Early to Beat Heat

Arrive at opening time for cooler temps and fewer people. Taxi recommended for direct access. Reddit

👟 Wear Sturdy Shoes

The path can be uneven; comfortable, closed-toe shoes are essential for safety. Reddit

Tunnel of Eupalinos. Amazing ancient greek engineering #ancient #ancienthistory #engineering #fy #fyp #history #greek #greece #reels #education #school #books
mad_about_history_scott
204 likes • 4.7K views
In 550 BC, the ancient Greeks constructed the Tunnel of Eupalinos on the island of Samos, an aqueduct tunnel dug through a mountain to supply fresh water. Remarkably, the engineers dug simultaneously from both ends, meeting in the middle with only a 6-foot error—a feat so precise it remains impressive even by modern standards of engineering. This tunnel, over 1,000 meters long, is considered one o...
randomfactai
89 likes • 8.5K views

⛑️ Helmet Provided

Helmets are mandatory due to low ceilings. Hairnets are also provided for hygiene. Reddit

📚 Research History Before

Guides are present but not informative. Learn about the engineering beforehand. Reddit

Yunanistan: Samos Adası tur programımız içerisinde Kastro Dağından geçen ve MÖ. 6. yüzyılda su kemeri olarak kullanılan, 1.036 metre uzunluğundaki Eupalinos Tünelini gezerek keşfettik. Geometriye dayalı bir yaklaşımla olan Eupalinos Tüneli, UNESCO tarafından Dünya Mirası Listesinde yer almaktadır. Yeni Keşifler İçin Arkhe Tour #arkhetour #tunnelofeupalinos #samos #pythagorio #sisam #yunanistan #...
arkhetour
43 likes • 7K views

Tips

from all over the internet

🎯 Go Early to Beat Heat

Arrive at opening time for cooler temps and fewer people. Taxi recommended for direct access. Reddit

👟 Wear Sturdy Shoes

The path can be uneven; comfortable, closed-toe shoes are essential for safety. Reddit

⛑️ Helmet Provided

Helmets are mandatory due to low ceilings. Hairnets are also provided for hygiene. Reddit

📚 Research History Before

Guides are present but not informative. Learn about the engineering beforehand. Reddit

💰 Consider the Fee

Entrance is €10. Some visitors felt it could be cheaper given the duration and accessible length. Reddit

What Travellers Say

4.3
(2k reviews)

Reviews Summary

Visitors praise the Tunnel of Eupalinos as a remarkable feat of ancient Greek engineering and a must-see on Samos. The cool interior offers a welcome escape from the heat, and the historical significance is widely appreciated. Some find the entrance fee a bit high for the accessible portion, and recommend researching the history beforehand as guides are not informative.

"If you’re visiting Samos, I highly recommend going to Tunnel of Eupalinos. It shows the great engineering skills that’s been on this island for thousands of years. Also a plus that the cutest little kitten came running to tell you all about the history of the place.

Here is my recommendation (and the route I took).
Start your day early so it’s not too hot (it will be hot regardless, but the earlier the better).
Take a taxi to the Tunnel of Eupalinos, and be there when it opens. First trip down is 8:40. If you’re afraid of heights and tight spaces, this might not be for you. But the safety person following you down is super friendly and will take it slow if you get scared.
When you get back up, follow the road back and at one point you’ll come to a sign that shows you the way to the Ancient Theater of Pythagoreio. Go by here, take some pictures, and continue your way upwards.
There are plenty of seats on your way up, so if you get tired - take a seat and watch the view. You will get to the top and see the beautiful Panagia Spiliani Monastery. Here you will be greeted by cats and find serenity. Walk around for a bit, then find a seat to have some water and a short meditation on the beauty of this island.

Then start your walk down towards the town of Pythagoreion. Here there are many cute stores you can browse (and maybe buy some things to bring home). Plenty of good eateries. And also more history to be experienced. I recommend having a coffee and brunch at Hygge, before running through all the stores. Then visit the Archeological museum. And finish with a dessert at Two spoons before you find your way back to wherever you’re staying at the island."

Cecilie T

"Great way to beat the heat, nice in cool in the tunnel, and the history is just as cool.🤯

You must wear a helmet before entering, which is necessary since everyone hit their helmet on a rock. Helmet and hairnet is provided"

Joe Savoie

"€10 for entrance. It a good experience, a lady took us down the tunnel but they are not information guides so look up the history before you arrive. Didn't go into the cave to far, as some of it is closed off to it being unsafe. Wear proper shoes. Would have given it 5 stars but think it could have been a bit cheaper due to the time we were in there and how far we went in the tunnel."

njs

What People Like

Incredible ancient engineering
Cool escape from heat
Historical significance

What People Dislike

Entrance fee perceived as high
Limited accessible section

Frequently Asked Questions

🚇 🗺️ Getting There

The most convenient way is by taxi from Pythagoreio or Samos Town. Some visitors recommend starting your day early and taking a taxi directly to the tunnel entrance. While there's a path from Pythagoreio, it can be a hot and long walk, especially in summer. Reddit

Yes, there is parking available near the entrance, which is convenient if you are driving yourself. However, taxis are often recommended for ease of access and to avoid navigating unfamiliar roads. TikTok

Yes, you can walk, but it's a significant hike, especially in the heat. It's best to start very early if you plan to walk. The path offers scenic views but requires good physical condition. Reddit

Samos is accessible by ferry from mainland Greece and other islands, or by plane to Samos International Airport (SMY). Once on the island, renting a car or using taxis are popular options for reaching the tunnel. Instagram

Public bus routes may not directly serve the tunnel entrance. It's advisable to check local bus schedules, but taxis or private transport are generally more reliable for reaching this specific site. Reddit

🎫 🎫 Tickets & Entry

The entrance fee is €10 per person. Some visitors have noted that while it's a unique experience, they felt the price could be slightly lower considering the duration and the accessible portion of the tunnel. Reddit

The tunnel typically opens early in the morning, around 8:40 AM, and operates throughout the day. It's best to confirm the exact hours closer to your visit, as they can vary seasonally. Reddit

Advance booking is generally not required. Tickets can be purchased upon arrival. However, arriving early, especially during peak season, is recommended to avoid potential queues. Reddit

The tunnel involves walking through a confined, underground space. Those who are claustrophobic or have a severe fear of heights might find it challenging. A safety person accompanies visitors, and they can go at a slower pace if needed. Reddit

The ticket includes access to the accessible part of the tunnel and a mandatory helmet. A hairnet is also provided for hygiene. While a person accompanies you, they are not a formal tour guide. Reddit

🎫 🧭 Onsite Experience

Comfortable, closed-toe shoes are a must due to the uneven terrain. Light clothing is advisable as it can still get warm, though the tunnel itself is cool. Reddit

Most visitors spend about 30 minutes to an hour exploring the accessible sections of the tunnel. The actual walk through the tunnel is relatively quick, but you might take time to absorb the history and atmosphere. Reddit

The accessible parts are considered safe, with helmets provided for head protection. Some sections are closed off due to safety concerns. A safety attendant accompanies visitors. Reddit

Photography is generally allowed inside the tunnel. However, be mindful of the lighting conditions and ensure you don't obstruct others. Instagram

Constructed in the 6th century BC, it's a remarkable example of ancient Greek engineering, serving as an aqueduct. It's one of the few tunnels known to have been excavated from both ends simultaneously. Instagram+1

📸 📸 Photography

The entrance area offers a good perspective of the tunnel's scale. Inside, focus on the architectural details and the play of light and shadow. The path leading to and from the tunnel also provides stunning panoramic views for landscape shots. Instagram

Yes, it can be quite dark inside, so a camera with good low-light performance or a tripod might be beneficial. Many visitors use their phone cameras, which are often sufficient for capturing the atmosphere. Instagram

Capture the impressive stonework, the narrow passages, and the sheer scale of the ancient construction. Don't forget to photograph the surrounding landscape from the path for a broader view of Samos. Instagram

Generally, photography is permitted. However, always be respectful of other visitors and avoid using flash in a way that might disturb them or damage any sensitive areas. Instagram

Early morning or late afternoon can offer softer light, especially for exterior shots and the surrounding views. Inside the tunnel, the lighting is consistent, but capturing the depth might be easier with a wider aperture. Reddit

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