Pirates' Fortress

It appears in The Legend of Zelda Majoras Mask as a hideout fora gang of pirates who plan on ruling the Western Ocean. After learning about the missing Zora Eggs, Link must venture in and rescue four of the seven Zora Eggs and overhearing the Leader of the pirates, Aveil, saying the other 3 eggs where taken by sea snakes. In this fortress besides numerous traps and patroling guards you find the hookshot.

Note: The Pirate's Fortress resembles Gerudo Fortress in LoZ:Ocarina of Time because the pirates look exactly like Gerudos and they can also be taken out by your bow for some time.