Architecture

The great dome at Hagia Sophia was the largest hanging dome in the world until the completion of St. Peter's Basilica in Rome.

In the first half of the 13th century, the severe troubles in which the city was involved prevented the building's completion.

Hagia Sophia combines the features of a basilica - an elongated building founded on a rectangular or Latin cross plan - and a central building - based on a circular plan.

There were over 2400 water effects in the Park of Versailles, of which about 600 have survived to this day.

At the foot of the Spanish Steps begins the Via Condotti - it is named after the canal or canals that carried water to the Baths of Agrippa.

The collections of the Palace Museum are based on the imperial collection of the Qing Dynasty. They include paintings, ceramics, seals, steles, sculptures, inscribed ware, bronze ware, enamel ware, etc.

The eruption lasted three days.

Krak des Chevaliers, then a small Kurdish fortress, was a particularly desirable place for the Crusaders due to its strategic location.

During the reign of George V, the dynastic name of the German Royal House of Saxe-Coburg and Gotha also changed.

The construction of the new fountain lasted from 1735 to 1776.