As part of the Merry Mainstreet celebration in Downtown Mesa this holiday season, AZMNH will be hosting a free admission evening, which we like to call Merry Museum! Admission will be free from 5:00 PM to 9:00 PM on December 12, 2025.

While you're here, be sure to take a look at the MEAD Machine, the museum's incredible dinosaur-themed van, which takes the museum to schools throughout the Valley.