Locals dubbed it the "Owl Building" because of its bird-like appearance.

Eduardo Kobra’s breathtaking 32,300-square-foot graffiti wall took over Rio’s Olympic Boulevard.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

A modest reminder of treacherous waters at the Golden Gate.

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

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

A little slice of Florida face-in-a-hole kitsch, unexpectedly located in a small New Mexico town.

This colossal ancient sculpture of the monstrous Aztec rain god has a literally stormy history.

The oldest Roman lighthouse still in use.

A single light illuminates one man's overshadowed contributions to street lamp history.

Look closely and you’ll notice that the color changes a third of the way up the tower.

This ancient Egyptian obelisk still bears the wounds of World War I.

Dedicated to one of the darkest moments in Irish history, this memorial has faced its fair share of backlash.

Before Nixon, "watergate" meant canals.

A pier that used to act as a busy ferry dock is now a decaying favorite of local fisherman and urban artists.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

The last bastion of Roman presence north of the Alps looms over a German town.

There are owls with glowing eyes in Herald Square.

Carrying on the legacy of a short-lived experimental school tucked away in the mountains of North Carolina.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

Home to a timed geyser created by complete accident.

This New York holdover was built to provide housing for shopgirls and still does not allow men above the lobby.

A miniature representation of Canadian cities and landmarks in incredible—and sometimes hilarious—detail.

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