Porta Cavalleggeri

The Porta Turrionis was one of the gates of the Leonine Walls and also a landmark in Rome.

Database Entry
Constructed sometime between 848 and 1455 (come on fellow historians, I can drive more than three times the age of the U.S. through that gap), the Porta Turrionis was so named because it stood next to a tower (turrionis) built by Pope Nicholas V. Speaking of driving, the location of the gate at the entrance to the Vatican was enlarged for cars in 1990, and the original was moved several metres to the side permanently closed, which might lead one to ask the important philosophical question: "Which gate is the real Porta Turrionis?", except the Pope renamed it the Porta Cavalleggeri, rendering the question utterly pointless and nonsensical.