Page link copied Treehouses have evolved well beyond the childhood den, with zip wires, TVs and even their own bathrooms Homes with substantial treehouses offer owners the option of self-contained retreats or even holiday lets From a Gothic manor in Kent to a Grade II* listed Somerset manor house, these properties prove the treehouse is now a serious garden room in its own right From copper baths nestled among the treetops to fully connected smart retreats with zip wires and underfloor...