Besieged by war, this castle ruin has crumbled into a peaceful picnic spot.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

One of the oldest and certainly best preserved Cistercian abbeys still in existence.

A network of concealed passageways lies within a busy London Underground station.

The monster at the center of the Darwin Center Spirit Collection.

A site of pagan worship which still attracts people looking for fairies.

A Victorian natural history and ethnographic museum with wonderful turn-of-the-century, science-book-esque evolution displays.

A mysterious artist-run cabinet of curiosities and library.

An unusual round church in London with a Templar past.