Monday, February 11th, will be another free admission day for the Denver Museum of Nature and Science! They’re open from 9 AM to 5 PM, and you can check out their current exhibitions here. Their next free day will be on Wednesday evening, April 3rd. You can find the full list of 2019 free days here.
If you’re military, you can receive a $3 discount on general admission, and free admission from Memorial Day through Labor Day through Blue Star Museums.