One of the most popular places to visit in Welshpool is the Natural Trust site, Powis Castle and Gardens, a medieval castle originally built in circa 1200. A Grade I listed building surrounded by formal, distinctive gardens, Powis Castle is one of the top places to visit in Wales. The unique, luscious grounds have been described as an enormous green pillow on which the dramatic building perches. The Castle itself is also home to a museum full of beautiful treasures from around the world.