Though tiny houses and treehouses often pack impressive amenities, it's a safe bet that few have the Cinder Cone treehouse beat when it comes to having a good time. The recently-completed multi-platform treehouse features a suspension bridge, and boasts both a full-size skate bowl and wood-fired hot tub.Writer and photographer Foster Huntington started work on Cinder Cone back in early 2014, and with the help of a group of friends it was fully completed within a year. The project actually comprises of two main structures, both of which are attached to Douglas Fir trees with a Garnier limb, a high-strength steel bolt that Huntington reports does relatively little damage to the tree involved.The lower of the two structures is called the Studio, and serves as Huntington's work space. It includes plenty of shelving, an iMac, a couch, sink, and a wood burning stove. The higher-up Octagon, meanwhile, serves as Huntington's private sleeping quarters.The treehouses are roughly 30 to 40 ft (9 to 12 m) off the ground, and are joined by an interesting ladder/suspension bridge that's supported in the middle by another Douglas Fir. Below the treehouses lie Huntington's wood-fired tub hot tub and the large concrete skate bowl.Cinder Cone is based on a rural plot in Skamania County, Washington, and apparently didn't come cheap, with the Daily Mail reporting that it cost US$170,000, to build. This figure does not include the land, which belongs to Huntington's family.Huntington wrote a book detailing Cinder Cone's construction which is currently the subject of a Kickstarter campaign with just a few days left to run. You can also check out the video below for a little more insight into the extraordinary project.