This compact yet informative museum details the history of Cantabria with artefacts from prehistoric times to the Middle Ages, plus interactive exhibits. Explanations are provided in both English and Spanish.

This legendary market will blow the mind of anyone who happens to have even a passing interest in seafood. The sheer variety of sea creatures sold here must be seen to be believed: apart from Korean favourites like crab and eel, there are the myriad types of fish and shellfish (try the 'kalguksu' noodles with clams, or 'bajirak'), plus essentially anything that can be extracted from the deep waters washing over Busan. Take a stroll around to gawk at the market's curiosities, such as the sea worm ('gaebul'), whose visual similarity to the male reproductive organ has earned it the apt nickname of 'penis fish'. Then, select the seafood that tickles your fancy and have it be cooked right then and there by one of the shops inside the market, many of which have a seating area in the second floor. Get all your seafood from a single vendor if you can, then proceed upstairs to be served your selection accompanied by sauces and side dishes (a few the latter can even be served on the house if you're in luck). Mind that a cooking charge applies, and the price on side dishes is listed per person. Given the upsurge in tourist numbers, prices at Jagalchi have reportedly gone up in recent years, leaving it for travellers who aren't exactly on a budget. Do not despair: most of what you'll see at the market is also served at nearly any seafood restaurant in town, and at a lower charge in some cases.

Fortress of the XI century, it was built by muslims. It is located on top of a rock in the higher part of the area of the town. During the Middle and Modern ages, the castle was very important due to its strategic situation. The 1644 and 1748 earthquakes and the bomb attack in 1708 in the Succession War were responsible for its destruction.