- Architect
- Stephen Sauvestre

- Location
- Paris, France

- Type
- Skyscraper
, Observation tower
, Radio broadcasting tower
- Year
- 1889 ad

- Architect
- WZMH Architects
, John Andrews Architect
- Location
- Toronto, Ontario, Canada

- Type
- Observation
, Telecommunications tower
- Year
- 1976 ad

- Architect
- Kohn Pedersen Fox Associates
, Wong & Ouyang (HK) Ltd.
- Location
- Hong Kong, China

- Type
- Skyscraper
, Office
, Retail
, Hotel
, Parking garage
, Observation
- Year
- 2010 ad

- Architect
- Fender Katsalidis

- Location
- Melbourne, Victoria, Australia

- Type
- Residential Apartment Building, Observation Tower

- Year
- 2006

- Architect
- C.Y. Lee & Partners & partners

- Location
- Xinyi District, Taipei, Taiwan

- Location
- Taiwan, Province of China

- Type
- Mixed use: communication, conference, fitness center, library, observation, office, restaurant, retail

- Location
- Cologne, Germany

- Type
- Restaurant
, Telecommunications tower
, Observation deck
- Year
- 1981 ad

- Height
- 266 m

- Architect
- Erwin Heinle

- Location
- Stuttgart(Germany)

- Type
- Television tower, Restaurant, Observation tower

- Year
- 1956

- Location
- Gettysburg, Pennsylvania, USA

- Type
- Observation deck

- Year
- 1974

- Antenna height
- 120 m

- Architect
- Skidmore, Owings and Merrill

- Location
- 233 S. Wacker Drive, Chicago, Illinois 60606, United States

- Type
- Office, observation, communication

- Year
- 1973

- Architect
- Grupo Torcello

- Location
- Buenos Aires, Argentina

- Type
- Mixed Uses (Hotel, Commercial, Residential, Observation, Communication)

- Year
- 2016
