Porta Metronia, Ancient city gate in Rome, Italy
The Porta Metronia features robust stone construction and stands as part of the Aurelian Walls, with its original passage now partially underground.
Emperor Aurelian commissioned this gate in 271 AD as a component of Rome's defensive fortifications, initially serving as a small secret exit from the city.
The gate structure includes two commemorative plaques from 1157 and 1579, documenting restoration works by the Senate of Rome and Pope Gregorius XIII.
Modern visitors can locate Porta Metronia along Via dell'Amba Aradam, near the Basilica of Saint John In Lateran in southern Rome.
The gate once channeled a water course called marrana, which powered 14 water mills and created a surrounding marsh known as il Pantano.
Location: Rome
Inception: 271
GPS coordinates: 41.88232,12.49864
Latest update: November 2, 2025 20:40
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