According to the UK's Daily Mail on August 31, when designing landscape architecture, you need to consider key factors such as service life, cost, and appeal. But in the following attractions, dreams turned into disasters for developers and tourists alike. Despite their extremely high development costs, they have failed to attract many visitors. The Daily Mail reviewed the world's most expensive failed attractions, including North Korea's Ryugyong Hotel and Dubai's World Islands.

Harmon Hotel in Las Vegas: construction cost £170 million (about RMB 1.7 billion).       

        Harmon Hotel in Las Vegas: construction cost £170 million (about RMB 1.7 billion). A non-gaming boutique hotel designed by the world-renowned architectural firm Foster & Partners, construction was halted after serious structural defects were discovered in 2008. On August 15, 2011, MGM announced that the building would be demolished. On August 23, 2013, the Clark County court approved a demolition plan estimated to cost about £20 million.    

Dubai's World Islands: construction cost £8 billion (about RMB 81.5 billion).    

        Dubai's World Islands: construction cost £8 billion (about RMB 81.5 billion). The World Islands refers to a series of artificial small islands in the waters of the Persian Gulf, arranged in the shape of a world map. Starting in 2003, Dubai began building 300 artificial islands, but construction was suspended in 2008 due to the financial crisis. About 60% of the islands were sold to private contractors, and most remain undeveloped. By 2013, only two islands had been developed and put to use. 

Berlin Brandenburg Airport: construction cost £2 billion to £5 billion (about RMB 20.4 billion to 51 billion).       

        Berlin Brandenburg Airport: construction cost £2 billion to £5 billion (about RMB 20.4 billion to 51 billion). Brandenburg Airport was originally intended to replace Schönefeld and Berlin Tegel airports, and was projected to become one of Europe's busiest airports, with annual passenger traffic exceeding 27 million. However, numerous construction, planning, and management problems have left its opening date indefinitely postponed. It is said that it may not open to the public until late 2019.  

 Atlantic City's Revel Casino: construction cost £1.5 billion (about RMB 15.3 billion).     

        Atlantic City's Revel Casino: construction cost £1.5 billion (about RMB 15.3 billion). The casino has been open for only two years and will close in September this year. Due to the downturn in the gambling industry, the casino already has renovation plans. The area in front of slot machines and other gambling equipment is deserted, with almost no gamblers.  

North Korea's Ryugyong Hotel: construction cost £450 million (about RMB 4.6 billion).      

        North Korea's Ryugyong Hotel: construction cost £450 million (about RMB 4.6 billion). Construction of the hotel began in 1987 and it was originally scheduled to open in 1989. It includes seven revolving restaurants and is the tallest building in North Korea. But after the collapse of the Soviet Union, North Korea suffered an economic crisis, and construction of the Ryugyong Hotel was halted in 1992. Construction did not resume until 2008, and the exterior was completed in 2011. Yet as of 2014, the hotel still has no plans to open its doors to guests.