The beautiful Art Deco building seen at the beginning of the film is the Sunset Tower Hotel - formerly an apartment building that housed the likes of John Wayne, Marilyn Monroe, Errol Flynn, Elizabeth Taylor, Paulette Goddard, Frank Sinatra and Bugsy Siegel. Built from 1929-31 and 15 stories tall, at a cost of $750,000 ($11.9M in 2016 dollars), it was renovated into a hotel in the 1980s.
On Ted and Jerry's "date" in San Francisco there are brief scenes from the 1939-40 Golden Gate International Exposition on Treasure Island.
The buses are 1938 or 1939 Flxible "Clippers".