EuroGraphics Seattle City Skyline 1000-Piece Puzzle. Box size: 10" x 14" x 2.37". Famous for the Space Needle, the largest tower in Seattle is actually Columbia Center, with the highest observation deck in the state being located on the building's 73rd floor. Strong high-quality puzzle pieces. Made from recycled board and printed with vegetable based ink. This superior quality puzzle will delight and educate all at the same time.