This tiny church near Sleepy Hollow contains Henri Matisse's last work, a rose window, and nine windows by Marc Chagall.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

Looking strangely like Rome's Colosseum, this unfinished tower has dominated the skyline for over 100 years.

The last known resting place of the king who united England.

Ride a boat through this magnificent underground world, which now doubles as a theater.

This colorful and fiery mural depicts the Irish folk story of the beloved hero Cuchulain.

Celebrated in poem, this tiny hidden cemetery has a big and grisly history.

A medieval abbey featured on 'Game of Thrones' that dates back to the 12th century.

A beloved upside-down beacon off the coast of Northern Ireland.

Occult books, tarot, oddities.

A mysterious monument meant to be a guide into "an Age of Reason" was destroyed after an apparent bombing.

A collection of haunted objects and macabre oddities under one roof.

A hidden medieval crypt where a famous legend says the devil used to teach black magic.

An immersive projection art installation uses sound, scale, and light to take visitors inside classic works of art.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

This bewitching Babylonian goddess haunts a hallway of the British Museum.

The commemorative stone column conceals a secret laboratory.

After a traumatic encounter with a six-foot eel, one Galway baker started making a daily loaf of sourdough in its shape.

Journey through a collection of over 35,000 Halloween items from all generations.

The famous blue house from the classic horror film "Halloween" is now a local landmark.

Everyone remembers Laurie Strode from Halloween, but this is the house where most of the blood was shed.

These carved, weathered stones once gave mail carriers and pub goers a leg up.

This tiny traditional smokehouse is the only one left in this historic fishing port.

The view that inspired the scenes of Dracula's first landing in England.