Berlin's citadel is home to a classic spooky love story. The ex-lover of 15th century ruler Joachim II, Anna Sydow, was locked in the castle during its short stint as a prison. Joachim asked his son, on his deathbed, to look after Sydow, but he threw her behind bars. She is said to roam the halls, unable to leave the citadel.
Photo: Wikimedia, Auriocus