One of your first stops should be Casa de Turismo. Here, you'll be able to find your bearings and get some great tips before you begin exploring.
If you're planning to stick around a while in Sucre, Casa de Turismo is a good place to kick off your sightseeing. This tourist information center is one of many attractions that'll keep you busy here. Plaza 25 de Mayo, Sucre Central Market, and Sucre Cathedral are also waiting to be discovered nearby.