This spectacular track has run continuously since 1882.

Historical figures from New York City's Catholic community reside in Midtown.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

A curious collection dedicated to human and animal anatomy and pathology.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

The history and future of cannabis.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

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

A beloved carnival gets a modern makeover in Los Angeles.

This sweet Southern elixir comes from what may be the oldest grape vine in North America.

Over 315,000 preserved amphibians and reptiles in jars.

A speck of nature and art in one of San Francisco’s most notorious neighborhoods.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

With the touch of a button, you can read a randomly selected short story.

The restored and active Victorian-era final resting place of San Francisco.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

A hidden subterranean installation offers a view of the sky.

The remains of a ruined mansion memorialize the 1906 earthquake.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.