Round buildings

The Colosseum ( ; ) is an elliptical amphitheatre in the centre of the city of Rome, Italy, just east of the Roman Forum. It is the largest ancient amphitheatre ever built, and is the largest standing amphitheatre in the world. Construction began under the Emperor Vespasian () in 72 and was completed in AD 80 under his successor and heir, Titus (). Further modifications were made during the reign of Domitian (). The three emperors who were patrons of the work are known as the Flavian dynasty, and the amphitheatre was named the Flavian Amphitheatre (; ) by later classicists and archaeologists f

multi-purpose indoor arena in New York City, located in Midtown Manhattan between 7th and 8th Avenues from 31st to 33rd Streets

concert hall in South Kensington, London, England, United Kingdom

thumb|Cross-section of the Pantheon's rotunda.

Carthagian amphitheatre in Tunisia

building in Campo Marzio, Italy

headquarters of Apple Inc. in Cupertino, California

The Round Tower () is a 17th-century tower in Copenhagen, Denmark, one of the many architectural projects of Christian IV. Built as an astronomical observatory, it is noted for its equestrian staircase, a 7.5-turn helical corridor leading to the platform at the top (34.8 meters above ground), and its views over Copenhagen.

museum in Wrocław, Poland presenting monumental cycloramic painting depicting the Battle of Racławice

skyscraper in South Africa

test track

mixed-use residential-commercial building complex in Chicago, Illinois, United States

The Tun Abdul Razak Complex ( '''''') is a civic complex of five buildings within the central business district of George Town, Penang. It first opened on 2 December 1976. At the time of its completion in 1985, the central skyscraper of the complex, Komtar Tower, at , was the tallest skyscraper in Southeast Asia. The complex contains of office and retail space on a superblock. It is a major bus terminal for Rapid Penang, and the seat of the Penang state government and the chief minister of Penang.

building in Wan Chai, Hong Kong

building with bow shape built around (or rarely including) a railway turntable where locomotives are housed, washed, serviced

ancient tomb on the Appian Way outside Rome, Italy

Hollywood Boulevard Commercial and Entertainment District building

Romexpo, also known as Romexpo Dome or Romexpo Town, is a large exhibition center and indoor arena in Bucharest, Romania. It is primarily used for exhibitions, concerts, and sporting events. The complex also hosts more than 140 other exhibits and trade shows every year. It is , houses under roof, spread throughout 11 pavilions.

wooden structure at the Expo 2025 Osaka

building in Arraiolos, Évora District, Portugal

circular temple

type of house with a circular plan, usually with a conical roof

building in Copenhagen

two circular buildings of standardized prefabricated concrete built in the 1970s

thumb|Overflight of The Integratron, June 1975