 
   
They were supposed to be shining examples of super-tall  architecture, towers that celebrate the prosperity of their respective  
urban locations. But after the economic meltdown began in 2008, hundreds  of promising projects around the world came to a grinding halt – even  those in the middle of construction. Some of these 13 stalled  skyscrapers may be completed if funds ever flow again, but others will  sit in silence until developers come up with new ideas to take their  places.
Calatrava’s Chicago Spire
 
 It was a divisive idea from the get-go, with some Chicagoans  applauding acclaimed architect Santiago Calatrava’s spiraling monolith  design and others questioning its impact on the city’s skyline. But this  skyscraper – which would have been the second-tallest in the world –  will probably never be built. Today, the site is an abandoned hole in  the ground, bereft even of construction equipment. 
Nakheel Tower, Dubai
 
 The planned centerpiece of Dubai’s famous man-made Palm Islands,  Nakheel Tower – which was to be named “The Pinnacle” – would have  consisted of three towers connected by ‘sky bridges’. Its projected  height of 4,600 feet would have far eclipsed the Chicago Spire. The  tower was canceled in December 2009 after the site had already been  cleared and leveled. 
Russia Tower, Moscow
 
 “In today’s economy, a project of such scale is no longer feasible  for us and can no longer be justified.” This explanation was offered up  by the developer of the Russia Tower in 2009 when the project was  cancelled outright after months of inactivity at the construction site  in Moscow, and the same could probably be said for every other building  on this list. The Russia Tower aspired to be the world’s tallest  building with 118 floors, 101 elevators, a capacity of 30,000 and a  completion date of 2012. 
Gran Torre Costanera, Santiago
 
 Santiago, Chile was to have been home to South America’s tallest  skyscraper, the Gran Torre Costanera, a megastructure holding a  six-level mall and two luxury hotels. 22 of 60 stories were completed  before the project was halted in March, leaving an empty shell in the  city’s business district. 
250 West 55th Street, Manhattan
 
 “Fans of giant gaping pits, rejoice!” cried Curbed NY when developer  Boston Properties announced that it would continue construction on the  foundations of the glass office tower at 250 West 55th Street in  Manhattan despite the fact that the building itself will probably never  be finished. Today, the site is just a fenced-off hole in the ground,  like so many others across the world. 
56 Leonard Street, Manhattan
 
 They were supposed to be “houses stacked in the sky” – upscale,  spacious living spaces in the heart of Manhattan designed by Swiss  architecture firm Herzog & de Meuron. Work began on the 56-story  building in 2008 and was halted in early 2009. Unlike many others, this  project hasn’t officially been declared dead, it’s just “frozen”, so  there’s still hope that it will someday be completed. 
Columbus Center, Boston
 
 It took 13 years, but the plug was finally pulled on Boston’s  Columbus Center when the developers failed to raise the necessary funds  to finish it. The ambitious $800 million project would have been a  complex of condos, hotels and stores straddling the Massachusetts  Turnpike, but has sat empty for two years accumulating trash and  graffiti. 
Boston.com provides a detailed interactive graphic showing what might have been. 
Jean Nouvel’s Signal Tower, Paris
 
 The Western edge of Paris is in need of a face lift, and famed French  architect Jean Nouvel aimed to add some modern eye candy with the  Signal Tower, approved for construction in 2008. But the project was  shelved in 2010 as investors got spooked by the ongoing economic  difficulties. Nouvel originally stated that the project would continue  once the economy picks up, but his firm has since abandoned it  altogether. 
The Leadenhall ‘Cheesegrater’ Building, London
 
 Whether affectionately or derisively, Londoners have taken to calling  the design for 122 Leadenhall Street the ‘Cheesegrater’ due to its  perforated steel frame and wedge shape. Construction of the new tower,  which was supposed to take the place of the now-demolished 1969 building  that previously occupied the site, has been delayed, but it seems  possible that the 737-foot tower will someday be completed. The wedge  shape is designed to preserve views of St. Paul’s Cathedral from Fleet  Street. 
U2 Tower, Dublin
 
 U2 isn’t exactly known for being low-profile in any capacity, so  perhaps it’s no surprise that this Irish mega-band planned to build  their home country’s first skyscraper and tallest building. The U2 Tower  would have perched a recording studio ‘pod’ atop a 120-meter-tall  structure packed with 180 condominiums and planned to include wind  turbines, solar panels and an exterior facade resembling fish scales. It  was suspended indefinitely in 2008. 
Leeds Lumiere Skyscraper
 
 Could Lumiere still snag the title of ‘Western Europe’s Tallest  Residential Skyscraper’? Maybe – if it ever comes back from the dead.  The project in Leeds, England was put on hold due to the credit crunch  after foundation work began in 2008 and the developers long hoped that  their vision for the two glass towers would someday come to fruition.  However, in August 2010 they announced that they would enter voluntary  liquidation, making completion unlikely. 
Burj al Alam, Dubai
 
 510 meters tall and 108 stories, the Burj al Alam is quite a  building. Designed to resemble a crystal flower, this skyscraper is  under construction in the business bay area of Dubai and is slated to  include 74 floors of office space, a 200-suite hotel, 27 floors of  apartments, a sky garden, a Turkish bath and a helipad. The project has  been delayed and renewed so many times since its inception in 2006 that  it’s unclear whether it will ever be completed.