The Olympic Tower (German: Olympiaturm) in the Olympic Park, Munich has an overall height of 291 m (955 ft) and a weight of 52,500 tons. At a height of 190 m (620 ft) there is an observation platform as well as a small rock and roll museum housing various memorabilia, which is signposted as "Rock Museum" outside the entrance. Since its opening in 1968, the tower has registered over 35 million visitors (as of 2004). At a height of 182 m (597 ft) there is a revolving restaurant, which seats 230 people. A full revolution takes 53 minutes. The tower also serves as a broadcast tower, and has one Deutsche Telekom maintenance elevator with a speed of 4 m/s (13 ft/s), as well as two visitor lifts with a speed of 7 m/s (23 ft/s) which have a capacity of about 30 people per car. The travel time is about 30 seconds. The tower is open daily from 09:00 to 24:00. By the end of 2018, over 43 million visitors have climbed the tower since its opening in 1968.There is a concept of making Virtual Reality weather timelapse service from Olympiaturm. In case it were implemented, it would become the first tower worldwide with such function.