There has been an astronomical clock on this spot since the 14th century.

An eerie diorama that captures the majestic nature of a few prehistoric-looking beasts.

This magnificent herd of stampeding elephants has been frozen in time for over a century.

The longest continuous underwater road in North America was built at the insistence of Franklin Roosevelt.

A remnant from the golden age of aviation still in use today, Pan Am's Clipper service took off from this Art Deco gem.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

Spinning silently in the lobby of an Art Deco masterwork is a massive vintage model of the Earth.

Peek through the gates at this oasis from the city, full of Old English charm.

Try not to get slimed in Tribeca.

A giant desert bird that once swung music fans at Coachella now has a home in a nearby traffic circle.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

A much-maligned monument to teetotalism.

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

Largest Roman Catholic church in North America.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

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