1801 California Street

1801 California Street
1801 California Street topped with the Transamerica logo in June 2016. CenturyLink signs are on other sides of the building.
General information
Status	Complete
Type	Office
Location	1801 California Street, Denver, Colorado USA
Opening	1982
Owner	Brookfield Office Properties
Height
Roof	709 ft (216 m)
Technical details
Floor count	53 (51 occupied)
Floor area	118,872 m2 (1,279,530 sq ft)
Design and construction
Architect	Metz, Train & Youngren

Coordinates: 39°44′52″N 104°59′23″W / 39.74778°N 104.98972°W / 39.74778; -104.98972

1801 California Street is a skyscraper in Denver, Colorado. The building was completed in 1983, and rises 53 floors and 709 feet (216 m) in height. The building stands as the second-tallest building in Denver and Colorado, and as the 111th-tallest building in the United States.

1801 California Street was previously occupied by offices for US West, and then served as the world headquarters of Qwest Communications. In summer 2011 following CenturyLink's acquisition of Qwest, the Qwest sign was removed from the top and replaced with the CenturyLink sign. Upon its completion in 1983, the building stood as the tallest building in the city. However, it held that distinction for less than a year, being surpassed by Republic Plaza in 1984.

The building has a brown concrete façade, and has a stepped design featuring four setbacks. It is an example of late-modernist high-rise architecture. The shape of the building resembles two interlocked octagonal sections, which separate near the building's roof. The roof houses an antenna mast; with this structure included, the building reaches to a total height of 738 feet (225 m), surpassing the 717-foot (219 m) roof of Republic Plaza. Therefore, when measuring by pinnacle height, 1801 California Street remains the tallest building in Denver.