Czech crown jewels

The Czech crown jewels are on display this week, something that apparently happens once every four to seven years. Jason and I considered going this or last weekend, but then we heard about the 4-5 hour wait and are having second thoughts. The crown (shown) was made for Charles IV for his coronation in 1347. It's made of pure gold and covered in precious jewels.
The crown and the rest of the jewels are kept in a vault buried deep below St. Vitus Cathedral. The vault apparently has seven locks on the door -- each with a different key. There are seven Czech figures (the president, prime minister, mayor, bishop, etc.) who are each tasked with keeping one key and they must all present their key in order for the vault to be opened.
I was reading some information about the crown jewels and I was intrigued by a legend that says that any usurper to the throne who wears the crown will be dead within a year. Czechs point to the death of Nazi Reinhard Heydrich as proof.
The Czech Republic was handed to Hitler before WWII in hopes of appeasing his aggressive tendencies. The Czechs weren't thrilled about this. Nor were they happy when Heydrich was named the "Protector of Bohemia and Moravia." There's a Czech legend that while inspecting the crown jewels that Heydrich donned the crown. Though I haven't found any proof for this, my Czech students swear that it's true.
Less than a year later, Heydrich was assassinated while riding through Prague.
(More to come soon.)