This amazing trail among the many waterfalls around Ingleton has been enchanting visitors since 1885.

What was once England's second-richest abbey is now a haunting ruin.

Here be dragons.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Tiny memorials honor individual victims of the Holocaust.

Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

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.

You must take the A train... to the last active cemetery in Manhattan.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

This curved Manhattan building was built to house the opulence of John D. Rockefeller's oil empire.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

Unrepaired walls from a 1920 anarchist bomb attack.

The New York hotel where tragic visionary Nikola Tesla spent his final hours, destitute and alone but for the pigeons.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

An artist's cute bronze subway sculptures belie his violent artistic past.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Slyly buy a shake in the Parker Meridien lobby.

A bit of retro transportation flair preserved in the world's largest department store.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.