Union Trust Building (Pittsburgh)

Designed by Frederick J. Osterling, the building was constructed on the site of Pittsburgh's nineteenth century St. Paul's Catholic Cathedral.

Many people believe that the building's unique roof is the result of a restrictive covenant placed on the land by its previous owner, the Diocese of Pittsburgh.

Richard Phelan) placed a restrictive covenant on the land when Frick purchased it so that, although it would now have commercial purposes, residents would always remember the cathedral that once stood there.

Another story suggests that there is a requirement that a place of worship must be maintained perpetually on the site, and thus there is supposedly a chapel in one of the towers to comply.

In 2008, it was purchased by California investors Michael Kamen and Gerson Fox; by August 2012 the building was the subject of bankruptcy proceedings to avoid a sheriff's sale.

The roof of the Union Trust Building