
A historic island in Vigo estuary, once a monastery & hospital, now a cultural site with gardens, accessible by guided boat tour.

Must-see attractions
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Boat tours available

Boat tours available

Must-see attractions
A historic island in Vigo estuary, once a monastery & hospital, now a cultural site with gardens, accessible by guided boat tour.
"The guided tour is highly recommended, offering a fascinating journey through the island's complex history."

Some terrain is rough with steps. Good walking shoes are essential for exploring the island.
Tours from Vigo/Cangas are the only way to visit. Book ahead, especially for weekends!

4.6 · 202 reviews
Natural Feature
Discover the most iconic attractions and experiences

Vigo Estuary
Explore a former monastery, isolation hospital, and concentration camp, now a preserved cultural site.

Connected by bridge
Walk across the bridge to the smaller San Antón Island, part of the archipelago's rich history.

Throughout the island
Wander through beautifully maintained gardens and natural areas, offering a peaceful contrast to its past.
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Some terrain is rough with steps. Good walking shoes are essential for exploring the island.
Tours from Vigo/Cangas are the only way to visit. Book ahead, especially for weekends!
The included guided tour is highly recommended for understanding the island's complex history.
Enjoy panoramic views of the estuary and Rande Bridge during the boat ride.
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Some terrain is rough with steps. Good walking shoes are essential for exploring the island.
Tours from Vigo/Cangas are the only way to visit. Book ahead, especially for weekends!
The included guided tour is highly recommended for understanding the island's complex history.
Enjoy panoramic views of the estuary and Rande Bridge during the boat ride.
Visitors consistently praise the guided tours for their informative and engaging delivery, highlighting the guides' ability to bring the island's complex history to life. The unique setting and the boat trip are also frequently mentioned as highlights. Some note that the terrain can be a bit rough with steps, and booking tours in advance is essential.
"Excursion with the company Mar de Ons.
Punctual departure and return from Vigo.
It's not permitted to visit without a guide and this is included in the ticket price. The guide was very good - tour was only in Spanish/Castellano but think you can request it in English.
Good overview of the island and a bit of free time at the end to walk alone.
Some of the terrain is a little rough and there are some steps to climb."
Rachel B.
"SAN SIMÓN ISLAND is located in the Vigo estuary and covers an area of 7 hectares. It forms the San Simón archipelago, along with SAN ANTON ISLAND and two other small islets, San Bartolomé and San Norberto. Currently, all of them are uninhabited. The islands of San Simón and San Antón are connected by a bridge.
Throughout its history, the island was used as a monastery, a lazaretto, a concentration camp, and a home for orphaned children.
The two islands together have been listed as a Site of Cultural Interest since July 29, 1999. Since then, the island has been rehabilitated, and gardens, buildings, and natural spaces have been preserved for cultural purposes and historical memory.
It can only be visited by requesting a special permit or on guided boat trips from Vigo and Cangas de Morrazo, lasting approximately 4:30 p.m. to 7:00 p.m. (including boat trips).
The guided tour is worthwhile, as it also includes a visit to San Antón Island (connected by a bridge) and the small museum located there to learn about its history and evolution.
HIGHLY RECOMMENDED. Our compliments to the guide who assisted us on our visit on August 3, 2025."
José Ma Ortiz
"Guided tour of the island of San Simón and San Antón. When you buy the boat ticket, a guided tour of the island is included. We went with the Mar de Ons shipping company. Both the crew and our guide, Yago, were very friendly and entertaining. Highly recommended."
JUAN CARLOS PC
San Simón Island is only accessible by boat. Guided boat tours depart from Vigo and Cangas de Morrazo. These tours are the only way to visit the island and typically include a guided tour of its historical sites.
Naviera Mar de Ons is a prominent company that offers guided boat trips to San Simón Island from Vigo and Cangas.
The boat trip, including the guided tour of the island and San Antón, usually lasts between 4.5 to 7 hours.
No, San Simón Island is uninhabited and can only be reached by boat. There is no public access by car or foot.
Yes, there are typically parking facilities available at the ports of Vigo and Cangas, though it's advisable to check specific port information for availability and costs.
The cost typically includes the boat trip and the guided tour. Prices can vary, but one source mentions around €17.5 for the tour. It's best to check with the tour operator for current pricing.
Yes, booking tickets in advance is highly recommended, especially for weekend tours, as they can sell out.
The island is accessible only through scheduled boat tours. Tours typically operate on weekends and may have specific departure and return times.
Yes, visits to San Simón Island are generally only permitted with a guided tour, which is included in the boat ticket price. This ensures visitors learn about the island's history.
No, it is not permitted to visit San Simón Island without a guide. The guided tour is an integral part of the experience.
You can explore historical buildings, restored gardens, and natural spaces. The guided tour covers its past as a monastery, isolation hospital, and more. You can also visit San Antón Island via a bridge.
The island has some uneven terrain and steps, so comfortable walking shoes are recommended. It's suitable for leisurely walks and exploring its historical and natural features.
While some athletic events involve swimming in the area, swimming directly around the island for leisure might not be part of the standard tour. Check with tour operators for any specific water activities.
Historically, it served as a monastery, a lazaretto (isolation hospital), a concentration camp, and a home for orphaned children. It's now a Site of Cultural Interest.
Yes, there is a small museum located on San Antón Island, connected by a bridge, which details the history and evolution of the archipelago.
Look for scenic views of the estuary, the Rande Bridge from the boat, the restored buildings, and the lush gardens. The connection to San Antón Island also offers unique perspectives.
Yes, photography is generally allowed on San Simón Island for personal use. Be mindful of any specific restrictions during guided tours.
Landscape photography, historical architecture, and capturing the serene natural beauty are popular. The island's unique history also lends itself to evocative imagery.
Drone usage is typically restricted in protected historical and natural areas. It's advisable to check local regulations or with the tour operator before flying a drone.
Morning light can be beautiful for capturing the island's landscapes and architecture. Sunset views from the boat ride back can also be stunning.
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