A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

The hallucinogenic center of the ancient world.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

A street in front of NASA's D.C. headquarters has been named in honor of the Black women who were essential to early spaceflight.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

Decades before the scandal, this staircase on the river was a literal "water gate."

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

The best way to get a sneak peek at the movies.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This controversial monument was designed to lionize the Red Army, but also disheartened the Latvian people.

This celebration of Latvia’s freedom and independence avoided demolition over half a century of Soviet occupation.

A relatively obscure antihero from the Marvel Comics universe adorns a wall inside Iceland's main airport.

An homage to Jackie Gleason's bus-driving character from 'The Honeymooners.'

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The last masonry skyscraper ever built reveals a transitional moment in architectural history.

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

A 400-foot-tall tall map of Chicago makes this once-ignored building stand out.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.