Lynn Tran and Richard Hazen built a Florida beachfront treehouse that would be the envy of any child. It's got two levels, hammocks and windows looking out on the Gulf of Mexico.

But the hangout has cost the couple a handsome sum: about $30,000 to construct and probably five times that in legal fees as they've fought local authorities over it, Tran said. Now, they're at their last stop, the Supreme Court. Unless the high court intervenes, the treehouse must be torn down.