Hitting two birds in one stone

So I'm preparing for my summer escapade to Colombia. My itinerary is already set, and I need to pack up my things in a few moments now. Aside from enjoying the country's top tourist destinations, I'll also get acquainted with the foreign date live I registered three weeks ago. It's like hitting two birds in one stone. But I also want to know some great spots I can visit in Colombia, I'll be in Cartagena for three days and will spend my four remaining vacation days in Bogota. Need help!