Situated on the west side of the agora in Athens is the Roman forum Gate of Athena. It was constructed in 11 BC. It has four Doric columns, with a base of Pentelic marble. According to the inscription on the architrave, the gate was dedicated by the Athenians to their patroness Athena Archegetis with funding by Julius Caesar and later Augustus.
It is amazing to see ancient ruins surrounded by modern buildings, not to mention the vehicles!