Burg Eltz is a medieval castle nestled in the hills above the Moselle River between Koblenz and Trier, Germany. It is still owned by a branch of the same family that lived there in the century, 33 generations ago. Photo by Wolfgang Staudt via
Looking down the Inverted Tower or Initiation well of Quinta da Regaleira, Sintra, Portugal. The owner wanted to develop the palace and its grounds as a gathering of symbols that would reflect his interests and ideologies.