For breathtaking views of Frankfurt's skyline, head to the Main Tower. As the city's fourth tallest building, the Main Tower offers an observation deck at a height of 200 meters. Take the elevator to the top and enjoy panoramic views of the city and the River Main. On a clear day, you can even see the Taunus Mountains in the distance. The Main Tower also features a restaurant where you can dine while enjoying the stunning vistas.