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Buckingham Palace (known as The Queen's House)

Location: London

Taj Mahal

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Taj Mahal

Location: Agra (India)
Built under: Empror Shah Jahan (Mughal empire's period), 1648

The Pentagon

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The Pentagon

Location: Washington (USA)
Built: 1943

Niagara Falls

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Niagara Falls

Location: Canada (Ontario) & New York (USA)
Height: 167 ft (52 m)

Saint Peter's Square

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Saint Peter's Square

Location: Italy

Pyramids of Ghizeh (Khufu's Pyramid)

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Pyramids of Ghizeh (Khufu's Pyramid)

Location: Egypt
Constructed: 2560 BC
Roof: 146.6 metres

Tower Eifel

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Tower Eifel

Location: Paris, France
Constructed: 1887 – 1889
Roof: 300.65 metres (986 ft)
Architect Gustave Eiffel
Engineer Gustave Eiffel

Colosseum

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Colosseum:

Location: Regione III Isis et Serapis
Built in: 70-80 AD
Built under: Vespasian, Titus