The Google Maps Raetsler

This game is played in Google Maps. You got a mysterious threat by the Rätsler and need to complete his tricky treasure hunt through Cologne. Try to find the exact street view from a picture and look around for clues. Follow the streets acording to the riddles and find the Rätslers reviews scattered through the city. Due to Google Maps not being a reliable game engine, some or more or all reviews might not work. Feel free to use the CheatSheet in case you cant continue.