It houses the remains of a 17th-century version of the Titanic.

Old Danish castle immortalized in Shakespeare's Hamlet.

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.

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

This war hero's old shop remembers the fine line between medicine and quackery during the Revolutionary War.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.

Bizarre Cavern.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A monument marks the location of the first successful steamboat demonstration.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

This 17th-century street hidden beneath Edinburgh was once a breeding ground for the black death.

The most loyal of little dogs, or a Victorian era publicity stunt?

The world's most elegant power lines.

Island ghost town detailing Flagler's folly in building the Overseas Railroad.

The largest freshwater lake in the Florida Keys.

The birthplace of American international flight service has been turned into a celebrity's microbrewery.

A historic presidential getaway on the continental United States' southernmost island.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A monument celebrating the idea of reaching inaccessible places.

The final resting place of the great navigator, or maybe his brother.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Ancient burial grounds of the wealthy.