Helpful links for Visiting Colombia

Aguardiente
Monserrate in Bogota
Cartagena de Noche (Cartagena at night)
The Beaches of Colombia

The Beaches of Colombia

Some of the best beaches are in Santa Marta. Its on the Carribean coast

Cartagena has some beaches but they have a zillion vendors trying to sell crap. The beaches are OK nit great but not poor. I didn't try going into the water. There are a bunch of islands called Isla Del Rosario that claim to have great beaches. Great meaning the water is crystal clear. The sand area tends to be small and the full of still more vendors. Its ok if you have a sweetie with you, boring without one. Cartagena has much more foreigners (American) than any other tourist. Santa Marta has mostly domestic tourists.
CTG has great night life and you can have some real fun. CTG has things to see but not a whole lot. Walled cities and forts are interesting. Check out the Inquisition Museum

Medellin has even less to do than Cartagena but the women are amazing. The Dancing midgets at Mangos night club are not to be missed. Medellin is a big industrial city so don't expect alot of touristy stuff. No touts just a great time.