There are owls with glowing eyes in Herald Square.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

The 28-foot granite map plots the locations of 40 theaters in New York City.

Captain America, Sub-Mariner, and the Human Torch were all born in this art deco Manhattan masterpiece.

Commemorating the spot where the famous scientist fed his pigeons.

A commemorative plaque hides a door that leads down to the New York Public Library's underground book bunker.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Colloquially known as "the lynching memorial," this is the United States' first memorial to the victims of racial terror at home.

The first integrated firehouse in Atlanta houses a museum on the history of desegregation in the city's fire department.

A psychedelic tribute to one of Georgia's most unique artistic visionaries, out of place and time in the heart of Atlanta.

Atlanta's strange assortment of concrete pillars inspires reflection in some, confusion in others.

A colorful square marks the heart of the city's LGBTQ community.

Scattered around Atlanta are little doors with big charm.

This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

Designed as a reminder of one of the darkest moments in Austrian history.

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

The world's most active stratovolcano is almost always erupting.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

Though they've since been renamed, these two streets hint at Dublin's darker days.

Auburn's iconic eagle flight goes back to a 19th century eagle that dropped dead on the field after inspiring the football team to victory.

A medieval wash house where people washed clothes in a river allegedly formed by the tears of a mourning nymph.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.