Explanation

Burj Khalifa

• Location: Dubai, United Arab Emirates
• Significance: World’s tallest building
• Height: 830 meters (2,717 ft)
• Construction Started: 6 January 2004
• Construction Completed: 1 October 2009
• Opening Date: 4 January 2010
• Owner: Emaar Properties

Last verified on 28-01-2026

Explanation

The Hanging Gardens of Babylon are the wonder of the ancient world, traditionally situated in Iraq

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1. Great Pyramid of Giza – Egypt - Built: c. 2560 BCE  

2. Hanging Gardens of Babylon – Iraq (ancient Babylon, near present-day Hillah)  

3. Statue of Zeus at Olympia – Greece  Built: c. 435 BCE  

4. Temple of Artemis at Ephesus – Turkey  Built: c. 550 BCE, rebuilt c. 323 BCE

5. Mausoleum at Halicarnassus – Turkey  Built: c. 350 BCE  

6. Colossus of Rhodes – Greece  Built: c. 292–280 BCE  

7. Lighthouse of Alexandria (Pharos of Alexandria) – Egypt Built: c. 280 BCE 

Explanation

Explanation

The Pentagon is the headquarters building of the United States Department of Defense.

Located in Arlington County, Virginia

It was constructed on an accelerated schedule during World War II

As a symbol of the U.S. military, the phrase The Pentagon is often used as a metonym 

It is the world's second-largest office building

Construction started: 11 September 1941

Completed: 15 January 1943

Floor count 7 (2 underground)

Architect(s): George Bergstrom and David J. Witmer

Explanation

The Empire State Building is a 102-story Art Deco skyscraper in Midtown Manhattan in New York City, United States.

Built from 1930 to 1931.

Its name is derived from "Empire State", the nickname of the state of New York.