The Pantheon’s door, one of the oldest bronze doors still in existence, has remarkably survived for nearly two millennia.

This mᴀssive door, original to the Roman structure, evaded medieval looting largely because the temple was converted into a church over the centuries. The door is incredibly balanced despite its weight, allowing it to be easily opened by a single person. Notably, it is one of only two doors worldwide that still uses a 2000-year-old lock.

The Romans were masters of bronze door construction, using this versatile and relatively inexpensive material to craft solid double doors, typically supported by pins in the threshold and lintel

The Pantheon’s door, towering at 7.53 meters (24.7 feet) high and 4.45 meters (14.6 feet) wide, is believed to date back to the time of Emperor Hadrian or possibly even to its original builder, Marco Agrippa.