A revolving restaurant is a usually tower restaurant

Tower restaurant

A tower restaurant is a restaurant located in a tower and is accessible by an elevator. Tower restaurants are laid out in such a way that guests can enjoy the panorama when taking their meal and beverages...

 eating space designed to rest atop a broad circular revolving platform that operates as a large turntable. The building remains stationary and the diners are carried on the revolving floor. The revolving rate varies between one and three times per hour and enables patrons to enjoy a panoramic view without leaving their seats. Such restaurants are often located on upper stories of hotels, television tower

Radio masts and towers

Radio masts and towers are, typically, tall structures designed to support antennas for telecommunications and broadcasting, including television. They are among the tallest man-made structures...

s, and skyscrapers.
A barrel-shaped, but stationary, restaurant on Fernsehturm Stuttgart

Fernsehturm Stuttgart

The Fernsehturm Stuttgart is the world's first TV tower built from concrete ....

, a TV tower in Stuttgart

Stuttgart

Stuttgart is the capital of the state of Baden-Württemberg in southern Germany. The sixth-largest city in Germany, Stuttgart has a population of 600,038 while the metropolitan area has a population of 5.3 million ....

, Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

, built in 1956, was noted as the inspiration for the idea of a revolving restaurant.