A beautiful geyser under environmental threat.

A smoke stack so large, the Washington Monument could fit inside!

The only road through the heart of Glacier National Park.

The rocks of a certain area of Butte, Montana give off a musical ring when hit.

New fungal and bacterial species call this deadly lake home.

Copenhagen's celebrated theme park and gardens.

This elaborate towering structure was once famed for its revolutionary height.

A rare view of a preserved Victorian science museum.

A layered tribute to the work of mosaicist Isaiah Zagar.

Decades before the scandal, this staircase on the river was a literal "water gate."

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Illegal drag racing two stories beneath Chicago’s streets.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

What's left of the ruins of the 1893 Columbian Exhibition, or World's Fair, also known as the White City.

Budapest's Communist-era statues, banished to the suburbs.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

One of downtown Berlin's last reminders of its Communist past.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

A restaurant and observation deck built in a unique broadcasting antenna.

Berlin's old airport.

The 1936 Summer Olympics site is a crumbling remnant of sportsmanship and a history its host country would like to forget.