North Korea's tallest building is an abandoned hotel that has never hosted a single guest. Take a look at the 'Hotel of Doom.'

• Ryugyong Hotel in Pyongyang, North Korea, is one of the tallest unoccupied buildings in the world. • Construction on the "Hotel of Doom" began in 1987 and has stopped and started several times. • One side of the 1,080-foot building has been outfitted with LED screens used for light shows.

At 1,080 feet, North Korea's Ryugyong Hotel in Pyongyang is one of the tallest unoccupied buildings in the world.

The 105-story "Hotel of Doom," which is also North Korea's tallest building, has never hosted a single guest. Construction began almost 40 years ago, and it is not yet complete — the cost of finishing the building is estimated to be around 5% of the country's entire GDP.

Still, Ryugyong Hotel remains a subject of international fascination.

Here's the story behind the abandoned skyscr