ST. LOUIS (AP) — St. Louis' largest skyscraper is on the market following foreclosure.

The vacant 44-story office tower was formerly known as One AT&T Center. The St. Louis Post-Dispatch reports that the building was put up for sale Thursday by a brokerage firm without an asking price.

The 1.4 million square-foot property was built in 1986 and takes up an entire city block. It is St. Louis' largest office building in terms of square footage and second-tallest, trailing the Metropolitan Square building. The tallest structure in the city is the Gateway Arch.

About 2,000 AT&T employees vacated the building in September.

The building, previously owned by Chicago-based InvenTrust Properties Corp., was placed into receivership earlier this year after U.S. Bank National Association Trustee sued its former owner and seized it.

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Information from: St. Louis Post-Dispatch, http://www.stltoday.com