Maintaining the tree house has been a rather simple job. "It gets somewhat slick when it rains but it's holding up well," Laurie says. Besides brushing off leaves in the fall, there's little other work to do.Photograph courtesy of Laurie Stubb. Photo 6 of 10 in Baltimore Tree House

Baltimore Tree House

6 of 10

Maintaining the tree house has been a rather simple job. "It gets somewhat slick when it rains but it's holding up well," Laurie says. Besides brushing off leaves in the fall, there's little other work to do.Photograph courtesy of Laurie Stubb.