Thanks to Colombia's improving security situation, it is once again safe to visit the Río Claro Valley in eastern Antioquia, where a crystal-clear river has carved stunning shapes into its marble bed. It's also a favorite spot for bird-watchers, who come to see everything from hummingbirds to herons to vultures.
You can stay in the lodge known as El Refugio, which is about 1km from the river and near the town of Puerto Triunfo. Río Claro is located just off the main road that connects Bogotá and Medellín. Most buses that connect the two cities will drop you off in Puerto Triunfo. Note that nighttime travel in this area remains risky; check current conditions.