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

Martin Bricelj Baraga's monolithic sculpture measures the blueness of the sky, and changes color to match it.

This abandoned Slovenian military barracks has become a punky-political art squat.

A miniature train-ride through Slovenia's largest cave system.

A European-style bath house in Chicago.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

All of Chicago's wood-paved streets are long gone but two alleys remain.

The remnants of a strange stilted building on rails can still be seen at low tide.

This monumental gateway marks the northern edge of Brighton and is a welcome sign to all visitors to the seaside city.

Decrepit Victorian public lift is a white-knuckle ride.

Dine amidst exotic plants at this former royal greenhouse.

The resting place for anonymous victims of the Danube's dark waters.

This former insane asylum now holds a pathological anatomy museum.

The unsettling remnants of a torn down movie set lies nearby the ruined location of the actual Płaszów Labor Camp.

Tucked inside a South Bank bar is an epic expressionist chronicle of the 20th century.

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

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.

Eighty million natural history specimens call this gargantuan museum home.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

The ruins of a 15th-century church once home to priests who prayed for a single family's salvation.

This medieval church is the only one in the world that features all Marc Chagall stained-glass windows.