 Peter built the stonecutting mill, drawing power from the adjacent canal turning basin.He also built a miniature of Tudor Place near the quarry called Montevideo, now owned by the Kiplinger family.Seneca Quarry provided the stone for hundreds of buildings around the Washington, DC area, including houses in the Dupont Circle and Adams Morgan area, the James Renwick, Jr-designed Trinity Episcopal Church (1849; demolished 1936), Luther Place Memorial Church (1873), and the D.C.