To the south west of the country, in the National Natural Park of Serrania de la Macarena you will find the "7 Colour River". One of the most spectacular and untouched rivers in South America. Its coulors, endemic species together with the joyfulness and kindness of the locals, makes this place an unreal experience.
2. The Lost City of the Tayronas.
Walking to the Lost City is like going back in time. This remote and exotic archaeological site is located on the Sierra Nevada de Santa Marta which, by the way, is the world's highest coastal range. The Lost city of the Tayronas is actually bigger than the Amazing Machu Picchu (and far far less crowded ;) )
4. San Agustin Archaeological Park y Tierradentro.
Another fantastic archaeological site with more than 300 statues that was declared a World Heritage site by Unesco in 1995.