Located at the end of a forest skid trail in an area of coppice forest, the tree house named « Duplex » is the most isolated tree house of Bois Landry. Together with the « Nest » tree house its 13 m height makes it the highest of the Estate. It takes its name from its double access: after a 10m high scale, you make it to a covered terrace and then subsequently you circumvent the trunk of your host tree, to reach your small room (for two), accessible by a step ladder.