North Korea’s Ryugyong Hotel, which hasn’t hosted a single guest since construction started in 1987, has recently shown some signs of life, suggesting it could finally open its doors in the not-too-distant future.

Nicknamed the ‘Hotel of Doom’ due to decades of delays – and rumours that the building may not be structurally sound – the 330m, 105-storey pyramid is the tallest unoccupied building in the world.

Work on the infamous hotel in Pyongyang began 30 years ago when Kim Jong-Un’s grandfather, Kim Il-Sung, kickstarted the project. The plan was to open the hotel in 1989 as the tallest hotel in the world and the seventh largest skyscraper, boasting casinos, nightclubs and Japanese lounges. However, construction issues, followed by the fall of the Soviet Union and subsequent economic crisis in 1992, resulted in the doors remaining closed.

The top of the 105-storey Ryugyong Hotel, the highest building under construction in North Korea, is seen in Pyongyang, North Korea. REUTERS/Damir Sagolj

The following decade saw work re-start, with the new aim being to officially open the Ryugyong Hotel in 2012 to coincide with the 100th anniversary of the birth of “Eternal President” Kim Il-Sung. The landmark year came and went and the hotel remained shut – but window panes and a telecommunication mast were added by Orascom, an Egyptian development company, giving hope that it might eventually be ready for guests.

In December 2016 rumours that the hotel might be gearing up for opening were sparked after locals spotted lights on in the building for the first time in years. Now things have progressed a step further, with two new walkways and a new propaganda sign about North Korea's latest nuclear missile launches having been added.

In the week leading up to the Korean War armistice anniversary on 27 July, “soldier-builders” were seen behind the walls around the hotel, as was digging equipment and new propaganda billboards.

However, officials have given no information about when the Ryugyong Hotel, which reportedly cost £470 million to build, might finally be ready.