The largest permanent Monopoly board makes one of the longest games even bigger.

The romance of early commercial flight still fills this Art Deco destination.

A house carved into a rock in the 1940s.

It was once the base for a series of domestic terror attacks.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

A monument to the art of slicing people open.

A speakeasy takes on Chicago's drinking culture.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

This shop for all your super spy needs hides an educational secret.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

Home to items never before seen by the public.

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

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

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

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

The remains of a ruined mansion memorialize the 1906 earthquake.

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

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

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

A psychedelic labyrinth on the San Francisco bay.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A huge musical instrument played by the ocean.

This North Carolina store preserves a historic moment in America's movement for racial equality.