Architecture

It had a sewerage system running along the streets.

The bridge was repainted in blue, white and red to celebrate the 25th anniversary of the coronation of Queen Elizabeth II in 1977.

Template's columns were 18 m (59 ft) high and had a 2,5 m (8,2 ft) diameter at the base.

The period of the city's most remarkable and dynamic development was the 1st century AD.

The Empire State Building's electrical wiring length is 692 km, and the water pipes are 112 km.

It is supplied with water by an aqueduct built in 19 BC.

The oldest architectural element found in Hagia Sophia, dating to the 2nd century BC, is the Nice Door.

Neolithic hunter-gatherer people appeared in Gobekli Tepe about 11,500 years ago.

Windsor Castle became the main royal residence for Queen Victoria and Prince Albert, although early in her reign Victoria complained that the castle was boring and tiring, resembling a prison.

In 1889, the tower was the entrance and main attraction of the International Exposition in Paris.