Portugal's National Pantheon has a history of curses, collapses and financial problems.

This charming candle shop has been in business since 1789.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

One of the last full-orchestra recording studios in New York City and an acoustical marvel.

Join in a Seance at the Swedenborgian Church.

A Pythagorean funhouse that tries, successfully, to prove that math is the coolest thing ever.

Unlock the secrets of the conjuring arts.

A legendary speakeasy bookstore returns from the brink.

The one-time epicenter of American songwriting is now a little remembered Manhattan commercial block.

Hidden in an ordinary Midtown building is a one-room museum dedicated to the greatest escape artist.

This semi-hidden Manhattan restaurant is based out of a loading dock.

A historic observatory precariously perched at the "Top of Europe."

Wee (and not so wee) footprints that insects and reptiles of the Paleozoic Era left behind.

This picturesque stream was up until recently the site of a ten story mountain of slag and sewage.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

The last street in Pittsburgh that's paved with wood.

A priceless collection of the Nation's cryptologic history.

Secret Soviet city once home to Russian cosmonauts and space training facilities.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.