This natural sea cave hides a small wonderland of natural turquoise beauty.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

This small road tunnel is the only place where you can cross beneath the Erie Canal.

Legend says that this short Canadian tunnel still holds the dying screams of a girl who burned alive.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

One of many reminders of Tesla's scientific contributions overlooks the falls which inspired him.

Take a drunken tour inside the world's largest known geode.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

A natural gas leak provides a flickering flame beneath a waterfall.

Ruins of a once-prized railroad station in New York.

Lost subway station nestled beneath Toronto's busy commuter line.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

One of Canada's most incredible rare book collections holds hundreds of thousands of gorgeous tomes that the general public can touch.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

Hidden in the hills of Hollywood, this secluded Oz-themed garden is dotted with dozens of thrones.

Half of a house.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

Olfactory delights in San Francisco's Botanical Gardens.

A 140-year-old castle with underground caves hidden in San Francisco.

Furniture tries to escape an abandoned building in San Francisco.

A French library that makes sure its love of books is writ large... giant in fact.

A trash dump made beautiful by nature's power.

The long, arduous journey of the stones of the Abbey of New Clairvaux.