The highest door in the world is located in the US at a height of 139 metres: It is the entrance gate of the VAB Building of NASA, where rockets and space shuttles are assembled prior to start.

The oldest door still in use is (naturally) a real wood door: The entrance doors of the Basilica of Saint Sabina in Rome supposedly dated back to roughly 430 AD.

The heaviest doors in the world are supposedly - one doesn’t really know for sure - the ones that guard the vaults of the US American gold reserves at Fort Knox: They weigh a mere 22,000 kg.

Once again Fort Knox: The thickest doors in the world guard the gold reserves of the US: 5,000 tonnes of gold behind 21 inches (53 cm) of steel and cement.

The oldest door in the world was discovered during an excavation of a pile-dwelling settlement in Pfaeffikon / Switzerland: It could be dated back exactly to the year 3063 BC! Real wood doors are simp

The door that is most difficult to reach is supposedly the air-lock gate of the international space station ISS: There are few travel agencies that offer such a voyage and it and is unfortunately terr

The most-photographed door in the world at least is that of the British Prime Minister’s residence and office at 10 Downing Street in London.

A matter of taste, like so many other things: However, connoisseurs agree that the “east doors” of the Florence baptistery are not called the “gates of paradise” without good reason: they are “so beau