Roosevelt Hotel

On Hollywood Boulevard in Los Angeles, California.

Hosted the first Academy Awards, in 1929.

Named after Theodore Roosevelt and financed by a group including Douglas Fairbanks, Mary Pickford and Louis B. Mayer, it first opened its doors on May 15, 1927.

From Wikipedia:
The 1st Academy Awards ceremony, presented by the Academy of Motion Picture Arts and Sciences (AMPAS), honored the best films of 1927 and 1928 and took place on May 16, 1929, at a private dinner held at the Hollywood Roosevelt Hotel, in Los Angeles, California. AMPAS president Douglas Fairbanks hosted the show. Tickets cost five dollars, 270 people attended to the event and the ceremony lasted fifteen minutes. Awards were created by Louis B. Mayer, founder of Louis B. Mayer Pictures Corporation (at present merged into Metro-Goldwyn-Mayer). It is the only ceremony not to be broadcast either on radio or television. Later ceremonies were much larger than this banquet for 250, so there was never an attempt to host the awards at the hotel a second time.