Puzzles commented by Doc

Austin (USA) online puzzleSt Angel Bridge and Castle in Rome (Italy) online puzzleOld smithy in Rothenburg on der Tauber (Germany) puzzle online from photoMonastery in Izvoru Mures (Romania) online puzzleRocky Mountains in Colorado (USA) puzzle online from photoChillon Castle (Switzerland) puzzle online from photoOld tenement houses in Washington, DC (USA) online puzzleWestern Alps with the Matterhorn in the background (Switzerland) online puzzleWat Rong Khun Temple (Thailand) online puzzleGraduation Towers in Ciechocinek online puzzleBoats at the quay in Stockholm (Sweden) puzzle online from photoDining Hall at Berry College (USA) online puzzlePCC historic tram on the streets of San Francisco (USA) puzzle online from photoFlasks puzzle online from photoStone barn in Emsworthy (Great Britain) puzzle online from photoCrayons online puzzle