If your trip to Los Andes is all booked but your travel itinerary is a bit on the empty side, we can give you a few hints and tips.Stop by Our Lady of Mercy Cathedral. It's one sight you'll usually find on travelers' must-do lists. If you still have some room on your schedule, Calle Larga Square and Museo Antiguo Monasterio del Espíritu Santo will keep you busy as well.