Which city gate in Rome was designed by Michelangelo?

The city gate in Rome designed by Michelangelo is Porta Pia.

Porta Pia was commissioned by Pope Pius IV as part of a new route, the Via Pia, through Rome’s Aurelian Walls. Michelangelo began the design in 1561, late in his life, and the gate became his final major architectural project.

Michelangelo reportedly presented three proposals, and the pope selected the least expensive. Construction continued after Michelangelo’s death in 1564, with Giacomo del Duca overseeing the work. The gate’s appearance was later altered, especially on its outer façade.

A common mix-up is Porta Nomentana, the older gate Porta Pia replaced. Porta San Paolo and Porta Maggiore are also ancient Roman gates, but neither was designed by Michelangelo. Porta Pia later became associated with Italian unification: Italian troops entered Rome through a breach nearby on September 20, 1870.