Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

These imposing walls and towers look more like the ruins of a fortress than a monastery.

The house where the writer spent his formative years.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

The ancient tomb acts as a calendar that keeps perfect time.

Ancient human remains unearthed around the iconic monument.

Famously misunderstood wonder of the ancient world

This memorial in the Adirondack wilderness honors the accidental death of a Scottish entrepreneur.

A hamlet full of permanent Christmas spirit holds one of the earliest theme parks in the United States.

It wouldn't be long after purchasing this farm, Brown would lead his siege on Harper's Ferry.

Dozens of houses in the Adirondack Mountains are reminders of a literal "cottage industry" to cure people of a deadly disease.

A former infectious disease laboratory chronicles how tuberculosis shaped a village nestled in the Adirondacks.

Home to items never before seen by the public.

This anonymous businessman sculpted in bronze became an enduring memorial after 9/11, and had been mistaken by rescue workers for a survivor in the rubble.

This Art Deco fortress in upstate New York gives Manhattan's vaunted examples of the style a run for their money.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A modernist landscape of water and sci-fi concrete.

Recently restored menagerie of Victorian-era beasts.

The private clubhouse for the members of the Academy of Magical Arts.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

An impromptu shrine appeared shortly after beloved "Torchwood" character Ianto Jones was killed off the show.