An architectural oddity hides in plain sight on this iconic London bridge.

This road earned its macabre nickname after hundreds of Iraqi troops died along it in 1991.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

This kitschy tavern is also home to rare early editions of "Treasure Island."

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

Edgar Allan Poe's old dorm is now a shrine to the author's legacy.

A six-story treehouse offers spectacular views of New York's Finger Lakes region.

Ecuador’s historic seat of government has been quietly looted in recent decades, and no one knows how or by whom.

Built on the remains of one the Incas’ most important gathering spots, this square keeps the spirit of a fallen empire alive.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Legend says if this neo-Gothic basilica is ever officially completed, the world will come to an end.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

Situated on a sacred Inca site, this 16th-century cathedral took nearly 100 years to build.

This 18th-century sundial was designed to calculate the date of Easter each year.

This geometric feat is a testament to the Incas' mesmerizing architectural abilities.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

The most loyal of little dogs, or a Victorian era publicity stunt?

A network of bells in the pubs and restaurants around Westminster alerts politicians when it's time to cast their votes.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.