Westinghouse Air Brake Company General Office Building

The Westinghouse Air Brake Company General Office Building (known locally as The Castle or Library Hall) in Wilmerding, Pennsylvania is a building from 1890. It was listed on the Pittsburgh History and Landmarks Foundation in 1975, National Register of Historic Places in 1987. Originally built as an office building for the Westinghouse Air Brake Company, it housed the George Westinghouse Museum from 2006 to 2016. In 2016 it was sold to the Priory Hospitality Group and is being developed into a boutique hotel.