Castel del Piano sits on fertile plains surrounded by forests and watered by springs, earning it descriptions as a natural paradise. The town has strong medieval roots from a powerful abbey that established many churches, earning it the nickname "City of Churches". The Church of San Niccolò is one of the town's most splendid structures, housing beautifully preserved frescoes. The Madonna Nativity Church stands out for its peperino rock facade and holds two 17th century paintings by Francesco Nasini. Castel del Piano also hosts a Palio horse race between four districts that rivals Siena's famous event.