A walk through the historic city center, under the streets of Seattle.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

The decorations were inspired by an unlikely missing treasure.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

This elaborately decorated, fairytale-like Romanian royal palace is one of the most striking castles in Europe.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

Romania's triumphal arch looks out over Bucharest.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

The Metropolitan Police refurbished the blue box (perhaps not coincidentally) the same year "Doctor Who" returned to TV screens.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

Famously misunderstood wonder of the ancient world

The final resting place of soldiers' loyal canine companions.

Protecting the dead from opportunistic body snatchers.

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

A sweet symbol marks the place where torturous executions were once carried out.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Hear the quietest sound from across the dome.

An unusual round church in London with a Templar past.

A tongue-in-cheek arcade where the games are based on everyday life.