El Castillo de la Imaculata Concepcion, located on the San Juan river of Nicaragua, was built in the 1670's to protect Lake Nicaragua and its ports, mainly Granada and Leon. Construction began shortly after an attempt was made by the pirate Gallardito to take control of the port of Granada and all the profits gained by its trade industry.
You can get in from San Carlos at the south-east corner of the Lago Nicaragua by boat (Cordobas $75 pp = $4 US).
Boats leave San Carlos at 6:30 am, 8 am, 10:30 (high season), 12:30, 2:30, 4:30
Reading a book in the library which is right inside the castillo. Listen to the sounds of the village and the water running down the river while reading Edouardo Galleanos book Las Venas abiertas de Latinoamerica.
Montecristo River Lodge, Frente Isla Sombrero de Cuero (Boca de Sabalos, El Castillo, Rio San Juan), ☎ 505 8649 9012, . checkin: anytime; checkout: anytime. All inclusive sitem: Room, all meals, use of horses, canoes, kayak, trails, fishing gear.$75.00. (per night,)