$10,000 dollar bill

Yes, it's real.
The Federal Reserve used it to transfer money to and from banks and was never issued to the public.

Tree-House restaurant, on Highway 58 at the entrance in Onoyama Park in the south of Japan. What may look like a genuine tree is actually a man-made concrete structure, just like the French used to build in the lathe 19th century. Customers actually have to get in an elevator inside the "trunk" to reach the restaurant