The building on the right is WTC 7 the day of 9/11 -- which did fall due to fire, according to the government.
That would make WTC 1, 2, and 7 the only steel-framed buildings to ever be felled by fire -- and right into there own footprints to boot.
Anybody smell something burning?
"Witness: Top of Beijing luxury hotel 'exploding' A massive fire engulfed a newly constructed, unoccupied luxury hotel in central Beijing on Monday night as crowds watched a nearby fireworks display to celebrate the end of Lunar New Year.
--source--"
Update: Fire Consumes WTC 7-Size Skyscraper, Building Does Not Collapse