The first transatlantic wireless signal was received at this 17th-century fort.

Where a young athlete began his run across Canada after losing his right leg to cancer.

This monument to a veteran of the Mexican-American War is one of only two in Manhattan that serve as an actual mausoleum.

Looking like nothing more than a cartoon deserted island, this tiny sandbar is home only to a single umbrella.

A small 19th-century graveyard tucked away in the middle of a suburban neighborhood.

The childhood home of the Sultan of Swat is just a line drive away from Oriole Park at Camden Yards.

Wedged between two sets of row houses is an awkwardly located family graveyard.

One of the oldest anatomical theaters in the U.S. still in use was once the site of an infamous cadaver riot.

The design of this historic domed church was influenced by Thomas Jefferson and intended as a statement of religious freedom.

An abandoned church gets a second life as a massive beer hall and event space.

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

A 200-year-old bar with a cheeky name claims to have served Edgar Allan Poe his final drink.

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

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

The trials and tribulations of marking Poe's grave.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

The steepest classic funicular in the world glides along a dizzying incline.

Thriving meadows span a rooftop in one of Brooklyn's most heavily industrialized neighborhoods.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

This fairytale-like structure is the last turf church ever constructed in Iceland.

Charnel house at the foot of Mount Sinai.

Thanks to its heroic service during WWII this Soviet castle has been turned into a monument towered over by a brutalist titan.

This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

The largest greenhouse in the world is home to over one million types of plants.