The Ryugyong Hotel, or Yu-Kyung Hotel, is an unfinished 105-story, 330-metre-tall pyramid-shaped skyscraper in Pyongyang, North Korea. Its name is also one of the historical names for Pyongyang. The building is also known as the 105 Building, a reference to its number of floors.
It's abandoned building because of many reasons. Now it's called the The Hotel of Doom/ The Ghost Hotel.