Round Buildings

Star Pit - fountain in Mediapark Cologne, artist Otto Piene

Mystery Park

Zootopia-by-Bjarke-Ingels-Group-00

round monopteros

Cité Idéale d'Urbino (recadré)

roman theater

regi1

De Chirico, piazza, 1955

Cité Idéale d'Urbino, 16e s.

Canaletto Ranelegh 1754

Land and Environmental Art (1998)

Jeffrey Kastner, Brian Wallis (eds.)