Explore Río San Juan
Río San Juan is a river region where San Carlos, El Castillo, Solentiname and the Indio Maíz conservation area require different travel arrangements. River transport is central to planning many experiences.
What to see
Explore San Carlos as a gateway and consider the fortress in El Castillo on a separate river journey. Solentiname offers another island context, while nature reserves require authorised routes and respect for conservation.
See the full guide: What to see on the Río San Juan: fortress, islands and nature
Things to do
Explore San Carlos as a gateway, consider the historic fortress in El Castillo or a separate journey to the Solentiname archipelago. Nature experiences near Indio Maíz must follow current access and conservation rules.
See the full guide: Río San Juan: river journeys, history and nature
Getting there and around
Identify the exact river destination and departure dock before arranging boats. The route to El Castillo is not the same as the journey to Solentiname, and lodges downstream may require an additional arranged transfer.
Before your visit
River conditions and protected-area restrictions matter as much as operating hours. Do not assume a single boat, guide or day trip can cover the entire region.