Wildfires moved in on some of Colorado’s most popular summer tourist destinations over the weekend, demolishing nearly two dozen homes near Rocky Mountain National Park and emptying hotels and campgrounds at the base of Pikes Peak.

A wildfire near Colorado Springs erupted and grew out of control to more than 3 square miles early Sunday, prompting the evacuations of more than 11,000 residents and an unknown number of tourists. And on Saturday, a blaze destroyed 21 structures near the mountain community of Estes Park, where many visitors stay while visiting the national park.