At the end of the street Kraj Sveti Ivana is the Temple of Jupiter, later converted into a baptistry. The temple once had a porch supported by columns, but the one column you see dates from the 5th century. The headless sphinx in black granite guarding the entrance was imported from Egypt at the time of the temple's construction in the 5th century. The walls of the temple support a barrel-vaulted ceiling and there's a decorative frieze around the other three walls. Below the temple is a crypt, which was once used as a church.