Edit -
Throw me off if old.
He put in a swimming pool and put his own elevators up there, too.
http://beijingcream.com/2013/08/wealthy-quack-beijing-rooftop-villa-is-an-asshole/
And Al-Jazeera video (includes photos of another building with a couple of houses built on top):
http://www.youtube.com/watch?v=zT0Ca8CGQvI
Throw me off if old.
Top this one, Trump.
A Chinese professor built a mountaintop getaway on top of a towering apartment building in Beijing.
Professor Zhang Lin’s rock-covered villa had the height right — it sits 26 floors up — but the home is dispensed with the rest of the mountain, Yahoo! News reported.
The tower residents left to hold up their ambitious neighbor’s dream penthouse were less excited to see the new addition.
The heavy construction cracked their walls and caused leaks, according to some neighbors. A few worry the entire building could collapse.
There are also questions about whether the professor obtained permits for the work.
'This was originally a small attic when he bought it,” a neighbor said. “But he tore that down and built this mountain on top of us.”