Architecture

In the 4th century, Petra was incorporated into the Byzantine Empire.

During his visit to Berlin on June 12, 1987, US President Ronald Reagan said: "Mr. Gorbachev, open this gate! Mr. Gorbachev, tear down this Wall!”

The author of the project was John Augustus Roebling - a well-known American designer of suspension bridges and author of the method of manufacturing steel cables.

When, after the Battle of Grunwald, King Władysław Jagiełło and his Polish-Lithuanian troops besieged Malbork Castle, there was a traitor inside the castle who hung a red flag in the refectory window.

To get to the Arc de Triomphe's viewing platform, you have to climb 284 steps.

The civil war and interregnum years caused enormous damage to the royal palaces of England.

King Louis XIV had his morning rituals.

The names of 72 prominent scientists and engineers of that time are engraved on the facade of the tower.

The chambers inside the pyramid of Cheops are covered with blocks of granite that weigh up to 80 tons.

To get to the top floor (102nd), you have to climb 1860 stairs.