Buje is very proud of its late Baroque Church of St. Servulus. It is magnificently decorated with statues, altars and paintings, and its organ is the work of a master craftsman Gaetano Callido. The bell tower also serves as a vantage point.
The old square on top of the hill harbours a 15th century patrician house. Not far off we find rows of Renaissance and Baroque buildings, remains of Venetian towers, and the three-storey Ethnographic Museum. The Church of the Blessed Virgin Mary has its own bell tower and lavish interior.