Now a memorial to merchant sailors and Titanic victims, this medieval church was destroyed by bombing raids in 1940.

The English Civil War began right here in 1642.

The oldest inn in England served brew to the crusaders.

There's a labyrinth of medieval chambers hidden deep below a 15th-century pub.

A labyrinthine underworld of tunnels and caverns hides beneath the city.

This secluded walkway overlooks a magnificently wild London green space.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

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

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

An ancient Egyptian temple in the middle of Madrid, Spain.

The Tudor-style cottage in the middle of the square is not quite what it seems.

This abandoned Greek island was the last active leper colony in Europe.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

The Dead Sea Scrolls were discovered in the ruins of this ancient monastic community.

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

The maze-like transportation hub contains abandoned areas, derelict stores, and a resident bat colony.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Moscow's other, lesser known kremlin is a fairytale-like cultural complex modeled after Old Russia.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

In Egypt's expanding metro area, many of the neighbors are dead.

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

This historic cemetery was inaccessible for several years due to dozens of land mines.

1,500 Commonwealth servicemen of World War II are buried or commemorated in this cemetery.

The home of the Dead Sea Scrolls is an abstract modernist dream.