Architecture

Its cost is estimated at $4.5 million in 1962 (over $44 million today).

An arsonist Herostratus destroyed it in 356 BC.

For the first time in history, the clock stopped before 1878 - it was caused by very heavy snowfall.

It could host up to 50,000 people, although, according to the Chronograph of 354—the first illustrated codex, created by Roman scribe and stone engraver Furius Dionysius Filocalus in 354 AD—it could actually host up to 87,000 viewers.

Hagia Sophia is famous for the light that reflects everywhere inside the nave, giving the dome the appearance of floating above.

The tower may have been about 120 meters high and was topped by a statue of Poseidon about 7 meters high.

To climb the Eiffel Tower you have to overcome 1665 steps.

In former times two roads led down from the church along the hillside, steep and muddy, inaccessible to carriages.

The first person to cross the bridge was a woman - Emily Warren Roebling.

The Tower of London is the oldest preserved palace and defense building in London, built in 1078 for William the Conqueror.