Round Tower: Did you mean...?

Konstantino-Eleninskaya Tower (St. Constantine and Helena Tower), the Kremlin, Moscow, Russia. Completed in 1490. Photo taken in 2012.

The remains of a Hellenistic defensive tower standing atop Pyrgi hill in the ancient city of Eleutherna on Crete. The tower was used from the Hellenistic until the Byzantine period (4th century BCE to 7th centuries CE).

The so-called Tower Tomb at Carsuale (Italy) is a mausoleum dated to between the 1st century BCE-1st century CE. Its lower structure is a quadrangular base 4.3 metres (14.1 ft) square and 2.4 metres (7.8 ft) high. Above the base, a hollow...

Ireland is filled with historical sites and monuments. The 'Emerald Isle' always has something new in store for those who venture there and are eager to learn about its fascinating past. Many sites have a mystical past told through legends...

Construction of the Tower of Babel by Pieter Bruegel the Elder. The painting is on display in the Kunsthistorisches Museum, Vienna.

The conical tower of the Great Enclosure of Great Zimbabwe, Zimbabwe. Built in the 13-14th century CE using granite, the purpose of the structure is not known.

Bell Tower at Gamla Uppsala, Sweden, site of the Norse Temple at Uppsala, which was destroyed by King Inge of Sweden, c. 1080.

As a prisoner in the Tower of the Temple, King Louis XVI of France still made sure to educate his son, the dauphin Louis-Charles (Louis XVII of France) on history and geography. Image by unknown author. Museum of the French Revolution, Vizille...

King Louis XVI of France, during his imprisonment in the Tower of the Temple, where he was held for the last months of his life during the French Revolution. oil on canvas by Jean-François Garneray, 1814. Musée Carnavalet.

The main tower of Osaka Castle in Japan, built 1584.