This is the Power Tower Kit (9 7/8" x 8 3/8" x 27'') HO Scale Model Railroad Building by Faller.
This sky reaching ride is not for the faint of heart. You'll travel up to a dizzying height then, after a moment's hesitation, you'll experience a fast free fall back to the ground. This working model is equipped with a 12-16V AC/DC drive motor with an electronic control sequence. Light poles, a ticket booth and other details are included. The model is based on an original fairground model of Maurer & Sohne in Munich.