There's a New Problem at San Francisco's Leaning Tower

More bad news for San Francisco's Millennium Tower. This time, it's a crack in a window on the 36^th floor of the 58-story building, SFGate reports. It happened Saturday around 2:30am when residents heard "creaking noises" and a "loud pop," per NBC Bay Area. Later, a resident found a crack in his window. San Francisco Supervisor Aaron Peskin tells SFGate that if the window, which is designed to withstand hurricane-force winds, were to fail completely "it would rain shards of glass hundreds of feet below onto one of the busiest, most congested parts of the city."

Opened in 2009, the 645-foot-tall Millennium Tower has reportedly sunk some 17 inches and is tilting (by 14 inches per SFGate, by 18 inches per NBC). In an email to residents, per Peskin, building management confirmed the window crack and said it was related to "ongoing problems with the building—i.e., the settling, sinking of the building." Other issues, according to NBC, include cracks in the basement wall and "strange odors" in some units. Units in the building sold for between $1.6 million and $10 million, per SFGate. (More San Francisco stories.)