Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

A vast city of the dead, where the deceased outnumber the living by more than a million.

The world's largest military aircraft cemetery.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

The world's longest outdoor covered escalator system transports commuters through Hong Kong's hilly terrain.

Eighty million natural history specimens call this gargantuan museum home.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

The oldest landmark of Toronto is a testament to shifting sands.

One of the largest underground systems runs under Canada's largest urban center.

The mortal remains of an estimated 70,000 people lie in the basement of a monastery in Lima, Peru.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

Hear the quietest sound from across the dome.

This former luxury resort in Kaua'i is now an abandoned relic.

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

A former copper mine which became a truly unsuccessful prison.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

An enthusiastically interactive mining museum that won't let black lung ruin the fun.

A century-old tradition has culminated in a small but singular collection of feline effigies.

A sprawling Victorian farm that has been surrounded by a capital city is one of Canada's greatest treasures.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.