Colombia has basically everything what a traveller is looking for; beautiful beaches, mountains, city life and much more. As an expat living in Colombia I would like to recommend some places that you should visit in Colombia
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.
Your Ultimate guide to Tayrona National Natural Park, Colombia