The Frankfurt Maintower is a 200 meter (660 foot) skyscraper in the center of the city, making it the 4th tallest building in Frankfurt. The name "Maintower" is derived from the Main River running through Frankfurt. The tower has a 40 m (131 ft) communications tower situated atop the building, as well as five underground floors and two public viewing platforms.
The tower features two adjacent buildings. The smaller of the two is of a rectangular shape, the taller one circular and with an entirely blue glass exterior that features the transmitter on top. Maintower was built in the 90's and houses the Landesbank of Hesse and Thuringia, Merrill Lynch’s German office, and a television studio of the Hessischer Rundfunk, among other businesses.