The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

Frank Lloyd Wright’s most iconic home dangles over a Pennsylvania waterfall.

Rare recess caves fill this unbelievably beautiful Ohio park.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

This funicular railway rumbles along for a mile up the nearly vertical face of Chattanooga’s Lookout Mountain.

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

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Few other hotels can rival the grandeur of the Castle in the Rockies.

One of corporate America's best-kept secrets is also one of the most publicly displayed.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

A tunnel with windows, so you don't miss out on the impressive views.

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

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

The Boston square dedicated to the dark poet who was born nearby.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

This automated sculpture of two men peeing will spell out text messages with their micturition.