This fantastical icy castle is built anew every winter.

These towering spires and glowing walls are carefully crafted from hundreds of thousands of icicles.

One man's homage to the sun continues to grow like a glass fractal.

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

The largest drain hole in the world.

San Francisco's newly reopened hands-on science museum.

Tiki luxury on Nob Hill.

Ghosts of France's colonial past.

The remains of a former logging boom town, crumbled away in the forest.

Ancient cliffs resembling a kilt on Scotland's second largest island emit an entrancing sound.

Each year melting snow turns these Austrian hiking trails into scuba zones.

A naturally beautiful, seemingly bottomless deep blue spring.

This natural spring not only claims to heal the wounded but it has also been willed to God.

A white oak with property rights.

Despite being burnt down multiple times, the ruins of this South Carolina church are still standing.

The remains of a chapel created for convenience.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

The ruins of a once massive plantation are now a private residence hidden in the Florida wilderness.

Japanese gardens dedicated to the Japanese farmer that refused to throw in the trowel.

Where manatees are the snowbird vacationers in these balmy Florida springs.

This Florida sinkhole hides a rainforest-like micro-environment in its depths.

This kitsch eatery is chock-a-block with bric-a-brac.

The scuba diving training facility was named for the steam that rises from the cave's chimney.

The culprit who accidentally lit this 3,500-year-old tree on fire stated "I can't believe I burned down a tree older than Jesus."