If you're looking for some inspiration for your trip, stop by Brecon Beacons National Park Visitor Center. You may be able to pick up some useful brochures or pamphlets.
You'll have sightseeing choices galore when in Brecon. Brecon Beacons National Park Visitor Center is a good place to kick off here, but there are many other interesting attractions to discover. Brecon Beacons National Park, Pen y Fan, and Brecon Cathedral are not far from the tourist information center and will round out your day nicely.