An eerie, decaying ghost town destined to fade into the forest.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

An eerie, abandoned military base engulfed by nature and graffiti is now home to a local park.

This grove was planted more than a century ago by the War Mothers of World War I.

This free, take-a-book shop seems like a trick but isn't.

Once part of a dam servicing an early 19th century grist mill, the tucked-way falls are a tricky-to-find urban oasis.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

A hidden alley in urban Baltimore is a haven for graffiti artists.

The trials and tribulations of marking Poe's grave.

This simple convenience store sits on the location where the Ouija board was named—and has a plaque to prove it.

Once America's tallest structure, now a Baltimore landmark.

A throwback to 1980's gaming nostalgia.

These trees are living witnesses to events that inspired poet Walt Whitman’s service during the American Civil War.

The site of a concentration camp where inmates were made to take part in one of the largest counterfeiting operations in history is now hauntingly empty.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

An imperial church bombed to ruins during WWII now stands as a jagged memorial.

This sprawling Jewish cemetery is one of the largest in Europe.

Someone loved this song enough to carve all of its lyrics onto a tree trunk in a Berlin park.

The site where a plot to assassinate Hitler was planned—and its conspirators were executed—is now a powerful memorial to the German resistance during World War II.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

Once a path for Jewish funeral processions, this unassuming alleyway is rich in local lore.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

Tiny memorials honor individual victims of the Holocaust.

The original burial place of this preeminent 18th-century Jewish philosopher was razed by the Nazis.