Architecture

About 15,000 people are working in the building.

The last official games in the Colosseum with the participation of gladiators took place in 404 AD, and with the participation of animals in approximately 528 AD.

In designing the opera house, Garnier combined architectural elements of the French Renaissance, Palladian architecture, and the French Baroque, giving it coherence and harmony.

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

With the experience he gained, Gaudi began to experiment more with his designs.

Construction of the bridge cost about $15 million.

L’Enfant’s plan was only partially executed due to the shortage of materials and labor.

The southern rosette also suffered much damage - only some of the stained glass originates back to the Middle Ages. French architect Eugène Viollet-le-Duc restored the rest in 1861.

In 2005, the Facade of the Nativity and the crypt of the Sagrada Familia temple were included in the UNESCO heritage list.

The original concept of the Space Needle was sketched by Edward E. Carlson on a napkin.