Explore nearly 400 years of English middle-class home life.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

A historic house left in "dramatic still life."

A hands-off space for graffiti artists to hone and display their skills.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

The tunnel's elegant proportions keep you snug with no claustrophobia freak-out.

A Jenga-style cylindrical tower of books that appears to go on forever.

The last municipal pneumatic post system in the world was in operation for over 100 years, and may run again.

Countless grotesque faces stare out from this eerie Prague art wall.

The history of occult science is turned into a creepshow at this lurid Prague tourist attraction.

An Orwellian sculpture with eyeball cameras watches passersby.

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

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

A winding path built in secret on the edge of the continent.

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

A psychedelic labyrinth on the San Francisco bay.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

Finally, you don't have to be a pious Swedish seaman to relax like one.

This small corner bar is home to a rare 1930s dance organ that still plays tunes for one Euro.

In her ancestral home, one chef preserves ancient Filipino recipes and serves up traditional, home-cooked food to history-loving foodies.

In Hong Kong, a fairytale flower tunnel is hidden within the gardens of a public housing complex.

The first museum in the United States dedicated entirely to posters.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

This historic, palatial theater is now one of the world’s most beautiful bookstores.