Stand at the center of this lakefront sundial, and you'll become part of the timepiece.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

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

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

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

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

There aren't too many operational funiculars around, but Pittsburgh has two!

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

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

This colonial cabin is the oldest building in High Point, built by one of the first settlers in the area.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

What looks like a normal building is really a hollow facade hiding a subway vent.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

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

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.