This undated photo provided by Jessica Brookhart shows a treehouse owned by Brookhart in Gold Hill, Colorado. Brookhart bought it recently and occasionally rents it.
This undated photo provided by Aaron Smith, who owns Treecraft Design-Built in Fort Collins, Colorado, shows a Pagosa Springs treehouse Smith and his firm built. Smith said interest in treehouses has increased in the last few years.
This undated photo provided by The Mohicans Treehouse Resort and Wedding Venue shows “Tin Shed” at The Mohicans Treehouse Resort and Wedding Venue in Glenmont, Ohio.
This photo taken by Nanci Butler in 2020 shows her husband, Ethan, in the backyard treehouse they built during the Covid-19 pandemic lockdown. About three months after it was built, an oak tree fell on top of the treehouse and demolished it.
This undated photo provided by The Mohicans Treehouse Resort and Wedding Venue shows one of the treehouses at The Mohicans Treehouse Resort and Wedding Venue in Glenmont, Ohio. Guests can enjoy luxury amenities in these treehouses all year at this resort.
This undated photo provided by The Mohicans Treehouse Resort and Wedding Venue shows “Little Red” at The Mohicans Treehouse Resort and Wedding Venue in Glenmont, Ohio. Treehouses at this resort have heat and…