National Skyscraper Day: A look at stunning pics of world's tallest buildings

The Clock Towers, located in Mecca, is a group of 7 tall skyscraper hotels.

Shanghai Tower has 128 floors and is 632-meter-tall (2,073 ft) located in Shanghai, China.

The Ping An Finance Center is located in China and is a 115-story, 599 m (1,965 ft) skyscraper.

One World Trade Center is located in New York City. It is the 7th tallest building in the world.

The OKO South Tower in Moscow is 354.1 m (1,162 ft) tall and has 85 floors.

Merdeka 118 has 118 floors and is 678.9-metre-tall. It is also called Merdeka PNB 118, Warisan Merdeka Tower, 118 Tower and KL 118.

The Lotte World Tower, located in Seoul, stands tall at a total height of 555.7-metre and has 123 floors. 

The Empire State Building in New York, USA stands at a total of 1,454 feet (443.2 m) tall, including its antenna.

The Burj Khalifa in Dubair has a total height of 829.8 m (2,722 ft, or just over half a mile).