The Temple of Jupiter (Croatian: Jupiterov hram) is a temple in Split, Croatia dedicated to the Ancient Roman god Jupiter. It is located in the western part of Diocletian's Palace near the Peristyle, the central square of the imperial complex. It was built between 295 and 305, during the construction of the Palace, and was probably turned into a Baptistery of St. John the Baptist in the 6th century, at the same time when the crypt dedicated to St. Thomas was built. Before the entrance to the Temple is one of the twelve sphinxes brought from Egypt by Emperor Diocletian. Scottish architect Robert Adam considered this temple to be one of Europe's most beautiful monuments.