The Arapahoe Libraries offers FREE Exploration Passes good for admission to 15 Denver area museums and attractions. Passes are available in limited quantities each day and grants admission for up to 7 people (some are fewer, so be sure to check the pass for specifics) to these places at no cost. You can book passes up to 30 days in advance.
Note that you must have a current AL library card (you’ll need the number handy to get your pass) but any Colorado resident can get a card as long as you present some sort of photo ID and proof of address at any one of their library locations.
To access the attraction list, go here and click on the words See Tickets. Because the Exploration Pass page can be sorted by date, the simplest method is to pick your day and see what’s available.
Be sure to read the “Pass Information” for each attraction. Some passes admit four people, others only two.
Participating attractions include (as of June 20, 2022):
Denver Museum of Nature & Science
Forney Museum of Transportation
National Ballpark Museum
Four Mile Historic Park
Colorado Railroad Museum
Denver Firefighters Museum
Molly Brown House Museum
Museo de las Americas
Clyfford Still Museum
Wings Over The Rockies
Rocky Mountain Quilt Museum