Fig. 9
From: Circus is a performance but it is also a building—memory of circus buildings in Europe
Source: 1Circus Gimnasticus (Vienna)—http://www.circopedia.org/Gymnastischer_Zirkel. 2Circus Ciniselli (St. Petersburg)—https://www.citywalls.ru/house23222.html. 3Circus of Carl Magnus Hinné (St. Petersburg)—http://www.circus.spb.ru/
Stationary circus buildings in the nineteenth century.