Architecture

The first king to use Windsor Castle as a residence was Henry I, who celebrated Whitsunday at the castle in 1110.

During the civil war called the Wars of the Roses in the years 1377 - 1485, when England was divided into two houses of Lancaster and York and their supporters, the character of the Tower changed.

It was built to withstand magnitude-9 earthquakes and a wind speed of 320 km/h.

Notre-Dame has had two spires in its history.

The Leaning Tower of Pisa is a cathedral bell tower that is part of a complex of buildings in the Piazza del Duomo in Pisa.

No written sources about everyday life in Petra have survived.

The city was surrounded by a fortified wall about 3 km long.

The Queen's Chamber is located centrally in the horizontal axis of the pyramid and located below the Great Gallery.

The bridge used to be lifted by a steam engine weighing 2,000 tons.

The Tower of London is guarded by characteristically dressed guards, called Yeomen Warders, or more popularly beefeaters.