Thrown out of the window
In 1618 Protestant nobles threw two royal governors and their secretary out of a window of the Old Royal Palace. All three survived the fall, and the event set off the Thirty Years' War.
Guinness lists it as the largest ancient castle complex in the world. Kings, emperors and presidents have ruled from here for over 1,100 years. Here's what you're looking at, and what to listen for as you walk through it.

In 1618 Protestant nobles threw two royal governors and their secretary out of a window of the Old Royal Palace. All three survived the fall, and the event set off the Thirty Years' War.
The Vladislav Hall was big enough for indoor jousting. Knights rode in on horseback up the Riders' Staircase, with steps low and wide enough for horses.
St Vitus Cathedral was begun in 1344 and only completed in 1929. Look closely at the west front: the newer half is 19th and 20th-century Gothic, and it's hard to tell.
About 70,000 square meters; Guinness recognizes it as the largest ancient castle complex in the world.
In 1618 Protestant nobles threw two royal officials and a secretary from a palace window; it helped start the Thirty Years' War.
It's the official seat of the President of the Czech Republic.