The Dragon Bravo Fire burning inside Grand Canyon National Park has destroyed dozens of structures, including a beloved and historic lodge.

Parts of Grand Canyon National Park remained closed to the public Sunday because of wildfires and the release of chlorine gas from a North Rim water-treatment facility, the National Park Service said.

Firefighters continue to work to contain two massive wildfires on the North Rim, but businesses on the South Rim of the Grand Canyon are urging the public to visit.