Discover the World's Greatest Heavyweight Boxer of the 20th Century! Jack Dempsey, aka "The Manassa Mauler," was the world's heavyweight boxing champion from 1919 to 1926.  OPEN: Holidays, Friday, Saturday, Sunday 11-5 pm or later if called ahead, 970-270-7185.

General Information: Hours of Operation: Holidays, Friday, Saturday and Sunday from 11am to 5pm.