The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

This overlooked museum houses an amazing collection of rare, antique typewriters.

Ride in 1960s style on the private luxury train Marshal Josip Tito used to travel around Yugoslavia.

A daily replay of the experiment that proved the rotation of the Earth.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

The United States Capitol's former columns still stand.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

The remains of what was, not so long ago, the world's largest city.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

A marble Lucifer hides behind the pulpit of this Gothic cathedral.

The romantic botanic tunnel feels like a well-kept secret.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

To truly appreciate Detroit's landmark skyscraper, you have to step inside.

A magnificent mansion hides a delightful collection of historic timepieces.

The unbelievably opulent home built for an infamous newspaperman.

The 16th-century church has the only stained glass windows that survived the Scottish Reformation intact.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

One of the world's most complex timepieces.

There has been an astronomical clock on this spot since the 14th century.

A huge wooden clock that is so beautiful its creator was forcibly blinded.

Macabre astrological automaton clock dating to the late 1400s.

One of its engravings is believed to be among the first representations of medical and surgical instruments.

A blunder resulted in these charming stone-lined streams becoming the target of a Nazi bombing.