The Blagen Block is an historic building in Portland, Oregon's Old Town Chinatown neighborhood, in the United States. The four-story building was designed by Warren H. Williams and completed in 1888. In 1970, the city's Historic Landmarks Commission designated the Blagen Block as a Portland Historic Landmark.[2] In 1975, it was listed as a primary landmark in the National Register of Historic Places (NRHP) nomination of the Portland Skidmore/Old Town Historic District, the building's designation subsequently translated to "contributing property" under post-1970s NRHP terminology.[2] Since 2014, Airbnb has had offices in the building,[3] opening its office in December of that year.[4]