Thanks to the Scientific Cultural Facilities District (SCFD) and the citizens who support it, residents of the SCFD district can enjoy free admission at Four Mile Historic Park!
About Four Mile Historic Park: http://www.fourmilepark.org
About SCFD: Since 1989, Scientific and Cultural Facilities District (SCFD) has distributed funds from a 1/10 of 1% sales and use tax to cultural facilities throughout the seven-county Denver, Colorado metropolitan area (Adams, Arapahoe, Boulder, Broomfield, Denver, Douglas, and Jefferson counties). The funds support cultural facilities whose primary purpose is to enlighten and entertain the public through the production, presentation, exhibition, advancement and preservation of art, music, theatre, dance, zoology, botany, natural history and cultural history.
More about SCFD: http://scfd.org