Apr 18 Arizona State Parks & Trails: Star Party at Kartchner Caverns 1:00 pm - 9:00 pm Kartchner Caverns State Park 2980 AZ-90, Benson Event Details Get Directions
Apr 18 Greater Phoenix City Nature Challenge 2026: Nature Observations 101 – Using iNaturalist for the Greater Phoenix City Nature Challenge 10:00 am - 11:30 am Arizona Science Center 600 E. Washington St., Phoenix Event Details Get Directions
Apr 18 Arizona State Parks & Trails: Earth Day Celebration at Red Rock 10:00 am - 2:00 pm Red Rock State Park 4050 Red Rock Loop Rd., Sedona Event Details Get Directions
Apr 18 Children’s Museum of Phoenix: Thing-a-ma-jigs 9:00 am - 4:00 pm Children's Museum of Phoenix 215 N. 7th St., Phoenix Event Details Get Directions
Apr 18 The University of Arizona: ENR2 Guided Tour 8:00 am - 9:30 am The University of Arizona Environmental and Natural Resources 2 Building (ENR2) 1064 E. Lowell St., Tucson Event Details Get Directions
Apr 17 Maricopa County Parks and Recreation: City Nature Challenge Practice Hike 11:30 am - 1:00 pm Estrella Mountain Regional Park 14805 W. Vineyard Ave., Goodyear Event Details Get Directions
