One of England's most famous churches hides a pair of little known architectural treasures.

Christ's blood preserved in a Belgian town.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

These picturesque ruins crumble beautifully into the ocean.

Perhaps the only prehistoric monument with its very own public bus stop.

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

This skewed English house has looked like it's going to fall over for centuries.

Today, Kent's medieval monarchs hold court on a busy pedestrian thoroughfare—or at least their statues do.

All that remains of the fishing-vessel-turned-warship is its weathered hull.

A complicated contraption for telling time by the moon.

A monument to one of the most famous modernist Chinese poems and its poet.

This beautiful, historic church looks like something out of a simpler past.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

Three columns of volcanic rock shoot out of the ocean.

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

Instead of solid circles, the stoplights in this northern Icelandic town have glowing red hearts.

Dozens of large, brightly-colored paintings adorn the walls of the "street art capital of Iceland."

This mountain fissure hides a secret path to a secluded mossy grotto within the rock itself.

Watch the newest land on the planet form before your eyes.

This legendary urban waterfall creates a dazzling display of rainbows.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.