Granger Hall, Concert hall in National City, United States.

Granger Hall is a historic concert hall at 1700 E. 4th St. in National City, California. Built in 1898 as a music auditorium for Ralph Granger's Paradise Valley estate, it was designed by architect Irving Gill with no parallel walls or surfaces, a slightly forward-sloping floor and a painted cedar shingle exterior. The present hall measures 100 by 32 feet, seats 150 and incorporates the original music room as a foyer.

The hall was commissioned in 1898 by Ralph Granger, who made his fortune from silver mining in Colorado. He hired prominent architect Irving Gill to design the building.

The ceiling carries a 75-foot mural of Euterpe, the Greek goddess of music, with cherubs. The hall was built as a music auditorium for Ralph Granger's Paradise Valley estate, and it is also known as Granger Music Hall.

The hall is relatively small and intimate, making it suitable for different types of events. The sloped floor and acoustic design ensure good sightlines and sound quality for visitors.

The hall's acoustics come from a design with no parallel walls or surfaces: the floor slopes slightly forward and the walls and ceiling have a slight canter. Architect Irving Gill learned acoustical technique working under Adler and Sullivan. The building was moved 12 blocks from 2600 East 8th to El Toyon Park in 1969.