Cartagena de Indias, a big beautiful place to travel around, is located in the wonderful country of Colombia.
In Cartagena you can relax at the large beaches where you can see people from different places around the world, taste the delicious food they cook over there and you can try the oyster or rompe colchones (this is a kind of fish mix) while you are at the beach because there are a lot of sellers around. I recommend this place to go for tourism, maybe you can rent a boat and take look around the different kind of beaches that they have. In some places you can see the spectacular sand that is light white or just the normal light brown sand. In Cartagena, you can take a tour in a wagon and learn some history about the city, but this tour is more exiting if you go with your girlfriend and is a good plan to do it at night, because is very romantic, you can feel the air and hear the waves so is very interesting and relaxing. Finally, if you want to go just let me know and maybe I can be you tourist.
