AKA: Flatiron Building, Pioneer Square, Seattle, WA; Triangle Hotel and Bar, Pioneer Square, Seattle, WA

Structure Type: built works - dwellings -public accommodations - hotels

Designers: Breitung, C. Alfred, Architect (firm); Tonkin and Greissinger, Architects (firm); Conradin Alfred Breitung (architect); Walter H. Greissinger (architect); Leslie V. Tonkin (architect)

Dates: constructed 1908-1910

3 stories

551 1st Avenue South
Pioneer Square, Seattle, WA 98104-2803

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Railroad Way and Dearborn Street and 1st Avenue South;


In its early days, the Triangle Hotel operated on this flatiron-shaped building's second floor with only 8 rooms. It was designed by the German-born architect Conradin Alfred Breitung (b. 1868).

The hotel had eight rooms when built;

Renovated in 1979 by Tonkin and Greissinger, Architects;

National Register of Historic Places (May 3, 1976): 76001892 NRHP Images (pdf) NHRP Registration Form (pdf)

PCAD id: 4998