Puzzles solved by Koa

Avila City Walls (Spain) puzzle online from photoRuins of the Wall of Constantinople in Istanbul (Turkey) online puzzleMarmaria in Delphi (Greece) puzzle online from photoStone ruins of ancient Pergamon (Turkey) puzzle online from photoPyramid in Tikal (Guatemala) puzzle online from photoColloseum in Rome (Italy) puzzle online from photoMachu Picchu (Peru) online puzzleParthenon (Greece) online puzzleMonastery in ruins of Petra (Jordan) puzzle online from photoEl Caracol, the ancient observatory (Mexico) puzzle online from photoRuins of Trajan’s Forum (Italy) online puzzleGreat Sphinx of Giza - Egypt puzzle online from photoThe ancient city of Byblos (Lebanon) puzzle online from photoAncient Maya ruins in Tulum (Mexico) online puzzleEk Balam (Mexico) online puzzleRuins in the Mayan city of Tikal (Guatemala) online puzzleColosseum in Rome (Italy) online puzzleEl Castillo, Chichen Itza (Mexico) online puzzleSmall cabin in the forest online puzzleHouse by a lake (Denmark) online puzzleMabry Mill (USA) puzzle online from photoNeuschwanstein Castle (Germany) online puzzle