Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

Two thousand artifacts from around the world collected by one woman who loved to travel.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

The first declared National Monument in the United States.

According to the legend, this strikingly beautiful hill has miraculous healing powers.

After the musical legend's death, his memorial was mysteriously graffitied in gold.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Legend says if you stick your thumb in the hole and it gets wet your wish will be granted.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The remains of a World War II munitions factory still haunt the fields of this Twin Cities suburb.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

Inside this store, a mysterious statue draws visitors from the world over.

The taxidermied remains of a once-great parrot.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

This one has sailed five times as far as Sir Francis Drake's famous ship.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

An incarceration museum on the spot of possibly the oldest prison in England.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

An ordinary pond with fish from out of this world.