This Berlin secretary cabinet, made by David Roentgen around 1786, is one of the most expensive pieces of furniture on the planet today. Its current value is estimated at $1.5 million.
The story behind this masterpiece is quite fascinating. There were a handful made for European rulers including Duke Charles Alexander of Lorraine, King Louis XVI of France, and King Frederick William II of Prussia.
As revealed in the video above, the desk features charming doors and draws that can be opened and moved with the touch of a button to flutes, symbols, and glockenspiel.
There are also secret jewel boxes, hidden compartments, and numerous mechanical features for the world to enjoy.