Shepherd Hall - Monument Place - was created in 1798.
New Hall Place was created in 1974.
Turd Hall (Hall of Turds)
Dance Hall of the Dead was created in 1973.
No, there is no government chamber in Mount Rushmore. Gutzon Borglum had planned a Hall of Records and had started carving the place for it. But there were problems with raising enough money for carving the monument, so work on the Hall of Records was stopped in order to be able to continue carving the four presidents.
Widney Hall was created in 1880.
Stanton Hall was created in 1857.
Whitescarver Hall was created in 1912.
Literary Hall was created in 1870.
Broadway Hall was created in 2000.
Cameron Hall was created in 1981.
Pickens Hall was created in 1858.
Hall-Scott was created in 1910.