A 98-room castle in the middle of Toronto that bankrupted a 19th century electricity multimillionaire.

The final resting place of a poisoned lover whose death was at the center of one of Glasgow's most sensational murder trials.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

The oldest stone house in Paris was built by its most famous alchemist.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

Unlike many reclaimed, abandoned mines, this Canadian cave system is still just a dangerous maze.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

An exquisite tunnel of cascading flowers.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

Most-visited and most-photographed slot canyon in the American Southwest.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

Rippling sand dunes frozen in the Arizona rock.

A huge musical instrument played by the ocean.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

This crystal clear water basin feeds the Lao river and powers a hydroelectric power plant.

In the city forest of Augsburg are oval, artificial ponds formed from a World War II bombing campaign.

This lovely little burbling creek is actually a deadly waterway that has dragged down everyone who ever set foot in it.

This former ice house dates to the early 19th-century and featured an underground chamber.

A mysterious ruin shrouded in more folklore than fact.

The ruins of a defunct limestone quarry still haunt this Scottish promontory.

These ruins have been linked to a sherbet factory that exploded, but the story may be entirely fictional.

An abandoned village where the ruined foundations cling to a cliff.