Kronborg Castle (Helsingør, Denmark)
The history behind the building in our November mystery photo — located in Helsingør, Denmark — began in the 1420s, when Denmark's King Eric VII chose that spot to build a stronghold known as Krogen ("The Hook"). Over a century later, in 1574, King Frederick II transformed it into a Renaissance castle that was eventually named Kronborg Castle. Following a fire in 1629, the castle was reconstructed in the same style.