A second generation sun-powered marvel lights up the night.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

A beautifully eclectic mix of architectural styles.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Cat art as far as the eye can see.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

Sip cherry liqueur at a bar dating back to 1840.

Eat the ultimate iteration of Portugal's most beloved pastry.

The best place in the world to buy tinned fish.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

An impromptu shrine appeared shortly after beloved "Torchwood" character Ianto Jones was killed off the show.

This pedestrian walkway cuts through a cemetery and over several burial vaults.

The castle still holds traces of the abandoned Roman fort it was built atop.

A harem-inspired Moorish fantasy design in a Victorian-era Welsh castle.

The medieval woodcut-style artwork chronicles life in medieval London.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

A sculpture outside London's oldest cathedral honors the Mohegan chief who died while petitioning the king.