Built 1802 Designated NHL June 21, 1990 Opened 1802 Architectural style Georgian architecture | NRHP Reference # 71000707 Designated PHMC November 22, 1946 Area 4 ha Added to NRHP 25 January 1971 | |
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Isaac Meason House, also known as "Mount Braddock," is a historic home located in Dunbar Township, Fayette County, Pennsylvania, part of the Pittsburgh metropolitan area. It was built from 1797 to 1802, and is a seven-part, Palladian style 20 room mansion. It is one of only 2 Palladian plan "true cut" stone mansions in the U.S. the other being "Mount Airy" in Warsaw, Virginia. Its namesake and original resident was a Revolutionary War hero and early political power broker in the area, becoming the richest person in Fayette County due to his interest in iron furnaces, Meason also served for 4 years on the Supreme Executive Council of the Commonwealth of Pennsylvania. The house consists of a 2 1/2-story, main section flanked by two hyphens, end pavilions, and dependencies. It is built of ashlar sandstone. Also on the property are a contributing frame bank barn, two stone dependencies, the remains of a shed, a low cut-stone wall with entrance pylons, and a stone wellhead.

It was declared a National Historic Landmark in 1990.



