A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

This turn of the century masterpiece has a mysterious goaty interloper.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

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

The rustic cabin-like decor of this Arts and Crafts-style church reflects the love of nature central to its little-known theology.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

The longest burning light bulb in the world.

Elevated freight railway turned wildly successful urban park.

Try not to get slimed in Tribeca.

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

A beautiful and abandoned New York subway station from 1904, complete with chandelier.

Where Venice's gondolas go for a tune-up.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

This London plaque marks the spot where David Bowie's famous alien made his debut.

A self-explanatory attraction allows fans to respectfully remember and honor a comedy legend.

A haunted hill that supposedly defied gravity.

This Florida resort community is where the Amish come to have fun in the sun.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

You can take a class, browse the library, or visit the lavish lair of an international men's humor society.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.