Architectureal fantasy quarter of Rome.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

A garden in Lisbon filled with giant porcelain creatures.

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

Two stunning 17th-century libraries and a cabinet of curiosities.

The Jewish diaspora shares a menu at this museum café.

A grotto-like lodge decorated with gilded mosaics, rocks and a noisy waterfall was the setting for the most sumptuous pleasure house of 1900s Europe.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

New York City's only preserved family home from the 19th century.

Nikola Tesla's former home contains an homage hidden from plain sight.

Peek through the gates at this oasis from the city, full of Old English charm.

A very classy 1920s-era bar right in Grand Central Station.

This beloved marketplace mascot poops money and grants good luck.

Dr Barnes' $25 billion private collection of art and arboretum.

The townhouse where the English poet created some of his most influential work has been preserved in tribute.

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

Collection dedicated to brands, packaging and advertising.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.