Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

A moving memorial to the fallen and missing from WWI trenches.

A little sculpture with a large wardrobe.

This collection of over 50 murals celebrates Brussels' rich history as the self-proclaimed home of the "comic strip."

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

This one has sailed five times as far as Sir Francis Drake's famous ship.

Ship-sized kinetic sculptural fantasy.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

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

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

The celebrated eyesore created by starry-eyed sweethearts.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

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

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

At one South African whaling station, this industrial extermination led to a feeding frenzy that may have even been a key inspiration for Jaws.

From mining complex to industrial exhibition, this museum once played a major part in the X-Files.

This quirky piece of naval artillery has been deafening Canadians for over a century.

Bird dung painted this huge boulder which in turn inspired the name of a city.

The large fjord lake is thought to be the home of "Ogopogo," a giant sea serpent.