This log cabin for sale in Gibbstown, N.J. is the oldest log cabin in the United States. Built during the 17th century by Finnish immigrants, the home features decorations of artifacts and antique furniture. But it's also got a few modern perks, including restored floors and walls, as well as four-car garage and a gazebo.But for anyone who wants to buy this historic 1,800 square-foot home, there's a catch. Find out what it is by watching the video above.