The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

La Monte Young and Marian Zazeela's "Dream House" will immerse you in an ever changing world of sound and light.

Visit a surreal landscape so otherworldly NASA actually used it to train the Apollo 17 crew.

Cliffs full of fossils at the portal to England's Jurassic Coast.

This massive underground salt mine now holds a sci-fi theme park in its depths.

It's hard to believe the dizzying patterns covering this abandoned mine are completely natural.

On rare days, this abandoned castle's gatekeepers open its doors, revealing the eye-popping splendor hidden inside.

One architect's organic, human-centric design has been fully realized in this alien art house.

An enormous, inside-out glass globe built in 1935.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

A room in New York City that contains 250 cubic yards of dirt worth a million dollars.

One kilometer of thick brass rod laid out before your eyes.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

An often-shuddersome journey into a low-tech, robotic themepark.

A former zoo turned public park, where visitors can hang out in the old animal cages.

The largest flower auction house in the world.

The world's only museum devoted to the wonders of fluorescence.

Thousands of flamingos and other bird species flourish in these Camargue wetlands.

The largest free-standing aquarium in the world resides in a hotel lobby in Berlin.

Over 3km of caverns and caves at the Switzerland-France border contain the largest underground river in Central Europe.

This impressive tunnel was dug entirely by hand over the course of 36 years.

Space program, pneumatics and more, bits and pieces, for movie sets or the common man.