Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

A historic arena where the Beatles played their first concert in the U.S.

This poor little statue is the most vandalized memorial in Washington.

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

A true roadside icon standing on the same plains that the herds once roamed.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

The world’s largest concentrated solar plant generates as many problems as megawatts.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

Museum preserving torture methods from the past.

This single room has survived the centuries with almost no deterioration.

This dramatic landscape hidden on the Isle of Skye looks as though you've stepped into the magical realm.

The final resting place of soldiers' loyal canine companions.

A collection of comics, graphic novels, animation and caricatures devoted to exploring this often overlooked art form.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

One part local history, 99 parts gruesome haunted house.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

The house where John Wilkes Booth conspired with his co-conspirators.

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

It was once the base for a series of domestic terror attacks.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."