Fonthill Castle. Doylestown, Pennsylvania, USA. #architecturaltourist #thearchitecturaltourist #architecture #architecturephotography #architectures #oldbuilding #oldbuildings #historicalbuilding #historicdistrict #lovearchitecture #instaarchitecture #doylestown #discoverdoylestown #doylestownpa #concretebuilding #concretearchitecture #reinforcedconcrete #artsandcrafts #artsandcraftsarchitecture #pennsylvaniaarchitecture #pennsylvania #fonthillcastle #mercermuseum #henrychapmanmercer #moraviantileworks #byzantinearchitecture #medievalarchitecture #gothicarchitecture #buckscountypa #buckscounty