Tour the world's largest deep-hole dimension granite quarry, where you can view the plant where gravestones are made and roll a ball down the outdoor granite bowling alley.

A small flooded ghost town with a few scattered structures remaining.

A house carved into a rock in the 1940s.

Roman ruins top white travertine terraces formed by ancient hot springs.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

First a horse rendering plant, then a 19th century landfill, this beach is full of glass from thousands upon thousands of broken bottles.

A 300-ship graveyard, with a few still visible at low tide.

One of the last few places in Manhattan that employed a pneumatic systemic keeps it on display.

Natural time capsule containing an alien ecosystem.

Dig for your own trilobites in this goldmine of invertebrates.

Stay in a room with a view... of the bottom of the ocean.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

The largest greenhouse in the world is home to over one million types of plants.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A giant 400-acre preserve in North Florida for displaced wolves.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

A colorful architectural gem in Seattle's uniquely modern Central Library.

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

Pick up all of the cosmic knick-knacks under the sun or take a creative writing course, all offered in this novelty storefront.

Venice's "Island of the Mad."