The TK Elevator Test Tower is an elevator test tower in Rottweil, Germany. It is owned by TK Elevator, who have their elevator research campus nearby. It stands 246 m tall and was built to test the company's MULTI elevator system. At 232 m, the tower contains Germany's tallest observation deck. It was completed in 2017 and was the tallest elevator test tower in the world then, as well as the second-largest elevator test chamber after a former mine shaft used by Kone.