Paris' fabled purveyor of exotic taxidermy and natural history curios.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Museum dedicated to "the man who moved the Earth."

This 700-year-old structure is one of the most unique architectural and historic monuments in Gdańsk.

Mausoleum and Holy Seat of Antiochus I of Commagene.

While not Turkey's deepest underground city, this subterranean redoubt is the largest.

Jesus' footprints and the first catacombs in the world.

Large collection from the 3rd millennium BCE.

Perched on a spindly rock spire in a Greek archipelago, this lighthouse would make a perfect wizard's tower.

Hidden in a secluded Greek cove is a pristine beach marred only by the rusting smuggler's hulk stranded on its shores.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

The 16th-century church has the only stained glass windows that survived the Scottish Reformation intact.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Accessible only at low tide, the deserted island is dotted with World War II ruins.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

A 18th century graveyard and its astonishing cortege of macabre iconography.

Every birth, death, and marriage is recorded in these color-coded leather-bound books.

This macabre painting of a Shakespearean scene looks like something out of a nightmare.

A historic arboretum and non-conformist, non-denominational park cemetery.

This derelict building used to house infirm Freemasons, their widows, and orphans.

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

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.