Swedish skyscraper with a 90° twist.

This chimerical bridge/tunnel appears to dead end right into the sea.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

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

A forgotten relic from New York's bygone trolley system hides in plain sight under a bridge.

Twenty-three trees, each paired with a basalt stone, line a street in Chelsea, continuing an urban project started by German Fluxus artist Joseph Beuys.

A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

New York City's first Modernist house.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

These ornate manhole covers were used for a now-forgotten purpose.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

Rat sculptures try to infiltrate the Graybar Building in an architectural tribute to New York City's nautical history.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

During the holidays, a vintage subway train whisks New Yorkers back in time.

The oldest continually used church in Minneapolis also sells great meat pies.

Downtown Minneapolis mixed art and function by turning some of their sewer covers into works of art.

A bronze statue on a downtown corner honors Minneapolis's favorite career gal.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.