Crossword Building ~ The Ukrainian city of Lvov installed a super-size crossword. The puzzle covers the entire side of a residential tower block that’s approximately 30 meters tall. During the day the crossword appears empty – with the answers lighting up at night. The questions for the puzzle are located in different point of interests of the city: monuments, theatres, fountains etc. so people walking around the city can try to solve the puzzle and write down their answers.