'Cause the fence start shaking, the earth was quaking.

A hidden subterranean installation offers a view of the sky.

A winding path built in secret on the edge of the continent.

Sporting Brutalist architecture, this school is hidden amid a quiet suburban neighborhood.

A trail weaves through the verses of a poem illustrated by stone sculptures inspired by Native American pictographs.

The inventor of the Coney Island hot dog rests in a grand mausoleum in Brooklyn.

A Los Angeles cemetery that was once at the center of a Supreme Court dispute.

The oldest home in Huntington Beach, the farmhouse is a monument to the region's pioneer past.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

Outside a Viking museum sits a modern-day runestone made by a Swedish runemaster using traditional methods.

This grisly exhibit houses skeletons and weapons from a devastating 14th-century clash.

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

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

The gilded, masterful astronomical clock will calculate time, dates, and planetary positions for thousands of years to come.

This sublime architectural marvel is a rare example of an expressionist church.

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

Copenhagen's celebrated theme park and gardens.

Home to three historic ships from the age of Vikings.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

The notorious "Hanoi Hilton" where Vietnamese colonial subjects and later American POWs, including John McCain, were imprisoned.

Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."