San Sebastian Aquarium

The San Sebastián Aquarium, also known as the Palace of the Sea (Palacio del Mar), is one of Europe's top oceanographic museums and a key landmark of San Sebastián in Spain. Situated in a picturesque spot at the foot of Mount Urgull, next to the fishing port, it is more than just an aquarium—it is a comprehensive complex integrated with a maritime museum. Since its opening in 1928, its mission has been to share knowledge about the marine environment.

The aquarium's collection is impressively diverse, housing over 200 species of marine animals from around the world. Visitors can admire exotic fish, jellyfish, and large sand tiger sharks. The main highlight is the large 360-degree transparent tunnel; walking through it makes you feel like you're on the ocean floor, surrounded by sea turtles and sharks.

The aquarium building itself, dating back to the 1920s, has historical value. It spans two floors, with the upper level offering magnificent panoramic views of the Bay of Biscay, the famous La Concha beach, and Santa Clara Island. Due to its popularity, the aquarium is the second most visited museum in the Basque Country, drawing about 300,000 tourists annually.

To contact the San Sebastián Aquarium administration, verify current opening hours, or ask other questions, you can use the contact details provided below. All essential visitor information is also available on the official website.

A visit to the San Sebastián Aquarium is a true immersion into the underwater world. The crown jewel of the exhibition is the massive 360-degree panoramic tunnel that runs right through the tank. As you walk through it, you'll come face-to-face with large sand tiger sharks, graceful rays, and thousands of other fish, creating the sensation of walking on the seabed. The aquarium features over 200 species of marine inhabitants, including ethereal jellyfish, coral reef dwellers, and unusual creatures like the longhorn cowfish or the boxer shrimp.

The aquarium is not only a place to observe ocean life but also an educational space. One floor houses an extensive museum exhibition dedicated to the maritime history and fishing of the Basque Country. Here, you can see detailed models of ancient ships, dioramas, and authentic maritime artifacts that tell the story of the close connection between San Sebastián, the entire region, and the sea. Visitors also have the chance to watch the feeding of the aquarium inhabitants, which takes place on specific days and times.

Special attention is given to the youngest visitors. A dedicated touch tank is available for children and families, where they can not only see but also gently touch some marine creatures. This interactive experience makes a visit to the aquarium truly unforgettable and helps visitors better understand the fragility of the underwater world. Additionally, the complex features a souvenir shop and offers services such as organizing children's parties.

The San Sebastián Aquarium boasts a convenient location in the heart of the historic part of San Sebastián, making it easily accessible on foot. If you are exploring the Old Town, reaching the aquarium is a breeze — the walk from the central square takes no more than 10–15 minutes. This stroll itself will be a pleasant part of your city tour, as the route winds through picturesque streets.

For those who prefer public transport, the aquarium is also well-situated. Nearby bus stops, connecting this area with other districts, are just a few minutes' walk away. Travelers arriving in San Sebastián by train can reach the aquarium from the railway station in about 20 minutes. If you are planning to arrive by car, please note that there are paid parking lots in the vicinity where you can leave your vehicle.

The San Sebastián Aquarium has a long and rich history, making it not just an entertainment center but a true cultural treasure. It was officially opened in 1928, becoming the first museum in Spain dedicated to natural sciences and maritime themes. The idea for its creation emerged in 1925 when the Oceanographic Society of Gipuzkoa decided to build a facility to promote knowledge about the ocean. From the very beginning, its mission has been focused on education and the dissemination of information about the marine environment.

The aquarium building, designed by architect Juan Carlos Guerra, is a landmark of the early 20th century. Over decades, it has been expanded and modernized several times to keep up with new technologies and visitor expectations. A particularly significant renovation took place at the end of the last century, transforming the aquarium into one of the most modern oceanographic museums in Europe. This was when the massive 1.8-million-liter tank and the famous panoramic tunnel were introduced.

Since its founding, the aquarium in San Sebastián has played a key role in scientific education. In addition to an impressive collection of marine life, it houses a museum dedicated to the maritime history and fishing traditions of the Basque Country. Constant updates to the exhibitions and the implementation of interactive technologies allow the aquarium to remain one of the region's most visited cultural sites, attracting both tourists and locals interested in the mysteries of the underwater world.

To fully experience the San Sebastián Aquarium, it is recommended to set aside approximately 1.5 to 2 hours. This is usually enough time to leisurely explore all the main halls, admire the diversity of marine life, and, of course, walk through the famous 360-degree panoramic tunnel. During this time, you will be able to immerse yourself in the underwater atmosphere and get vivid impressions from the main exhibits.

Keep in mind that the duration of your visit may vary depending on your interests. If you are traveling with children who might want to spend more time in the interactive zones and the touch tank, or if you plan to study the maritime history museum section in detail, it is better to allow a bit more time. In such cases, a visit could take over two hours, allowing for a deeper dive into each theme presented in the complex.

The San Sebastián Aquarium is open to visitors year-round, although its operating hours may vary by season. Generally, the aquarium opens at 10:00 AM. During the autumn-winter period, it usually stays open until 7:00 PM, while in the summer, hours are extended until 8:00 PM. Please note that during the low season, it may be closed on Mondays, except for holidays and weekends. As the schedule is subject to change, it is highly recommended to check the official aquarium website for the latest information before your visit.

To save time, especially during the peak tourist season, tickets can be purchased in advance online. However, please be aware that electronic vouchers sometimes need to be exchanged for physical tickets at the box office, which does not always eliminate the wait in line. Tickets at special or discounted rates are most often purchased on-site upon presentation of supporting documents. Advance booking is not mandatory but can make your visit more comfortable during busy days.

A visit to the San Sebastián Aquarium is a wonderful opportunity to discover not only the underwater world but also other iconic city landmarks. Thanks to its prime location in the historic center, near the harbor and at the foot of Mount Urgull, the aquarium is surrounded by numerous attractions that are easily reachable on foot. A walk around the neighborhood will allow you to dive deeper into the atmosphere of San Sebastián and make your day even more fulfilling.

Exploring nearby historical and natural sites will enrich your travel experience. Just a few steps from the aquarium, you will find old bastions, majestic churches, and green parks offering breathtaking views of the Bay of Biscay. Below is a list of interesting places located in the immediate vicinity.