We just learned about Caerlaverock Castle in Scotland.
Another famous castle is Schwerin Castle in Schwerin Mecklenburg-Vorpommern Germany, built in 973 AD. Germany.
As different rulers came and went in Germany, this castle was taken over by different people and used for things like military forts, schools, museums or palaces for royal people.
It is now where the state's parliament meets and works.
The castle has over 650 rooms, and is on an island in the middle of Lake Schwerin.
There is a legend of a good ghost named Petermännchen living in the castle, that sneaks around and unlocks doors at night, and will also scare away thieves or intruders.
Stories say that if soldiers guarding the castle fall asleep at night, the ghost will make noises to wake them up!
(from: wikipedia - schwerin palace)
Kid Facts - Blast from the past: Canadian Provinces