Round Tower: Did you mean...?

A 15th century CE illustration of the Tower of London castle, first built c. 1077-1110 CE by William the Conqueror. (British Library, London)

An aerial view of the Tower of London castle, first built c. 1077-1110 CE by William the Conqueror. The castle was then extended and modified over the subsequent centuries.

This tablet states the dimensions of each of the seven levels of Etemenanki, the ziggurat of Marduk at Babylon. This building is the Tower of Babel in the Book of Genesis. From Babylon, Southern Mesopotamia, Iraq. Circa 600-400 BCE. (The...

The Waterloo Block entrance, Tower of London, England.

The Eagle Tower of Caernarfon Castle, Wales. The castle was built by Edward I of England from 1283 to 1330 CE.

Dover Castle, located in the southern county of Kent, is one of the largest castles in England and one of the first to have concentric defensive walls. First built in 1066 CE by William the Conqueror to help prevent anyone repeating his own...

The Moorish Castle's Tower of Homage, built in the 8th Century CE. The "Moorish Castle" was built by the Berber Marinid Dynasty, and is a symbol of Muslim rule in Medieval Spain. The Tower of Homage is the tallest to be constructed during...

The White Tower is the symbol of Thessaloniki, Greece. During the Ottoman occupation of the city, it was used as a prison. The White Tower was constructed in the 15th century, following the Ottoman conquest of Thessaloniki in 1430. The tower...

Bell tower of Saint Sophia Cathedral, Kyiv, built in the Cossack Baroque style between 1699-1706, funded by Hetman Ivan Mazepa. The height of the bell tower is 76 metres.

The interior of the Tower of the Winds, also called Horologion of Androkinos, showing the central section of the floor of the monument. The holes were used for mounting the hydraulic mechanism which was installed inside the clocktower. The...