The "jacuzzi's" of Quebrada Las Gachas, Santander. You like bathing, but the Hotel pools are to crowded for your taste? In Santander you can bathe in a natural little jacuzzi pool and enjoy the quiet nature Setting around.
The Lago de Tota is the biggest lake in Colombia. There are several small islands, a perfect setting for a canoe or kayak ride across the lake. Also, you can try more adventurous watersports like water ski or diving.
The National Park Cocuy is located in the Andes mountains. Due to its location in high altitudes but close to the equator, the park is heavily influenced by glaciers and their movements. It is especially an attraction to rock climbers of all levels.
Desierto de la Tatacoa, Huila, Colombia, which is the second largest arid zone in Colombia and occupies 330 square kilometers of the land. Perfect place to just catch your breath and enjoy the silence in the sun.