El Castillo

Situated on the San Juan river which markes the border between Nicaragua and Costa Rica, El Castillo is a little out of the way and is reached by boat from San Carlos, situated where the San Juan river and Lake Nicaragua meet.

El Castillo itself is a fort with great historical importance as it was the last line of defence against enemy armies and pirates wanting to raid Granada. It is a pleasant town with a few basic accomodation options and small museum in the fort itself.