The grand complex of buildings that comprise Liverpool's Exchange Flags includes a vast World War II bunker that has been frozen in time.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

This abandoned lock-up was saved because of its connection to a local football team.

This aging storage facility is the world's largest brick warehouse.

After mysteriously refusing to surrender at the end of World War II this sunken submarine was only salvaged in a search for Nazi gold.

In this medieval fish bowl, the carp weren't pets.

The ancestral home of beloved English poet Lord Byron has a bizarre history.

Lord Byron's embalmed body lies within this medieval church.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

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

The oldest inn in England served brew to the crusaders.

The English Civil War began right here in 1642.

The modern birthplace of Irish freedom.

The bell that once tolled atop a lost Edinburgh gate now hangs for all to see.

Another entry into the world of Edinburgh's pop-up artworks.

Scotland's oldest purpose-built concert hall houses an incredible collection of ornate, centuries-old keyboards.

An artist's whimsical transformation of everyday objects.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

This funeral home had the honor, if that is the correct word, of hosting the funeral of the famous Sacco and Vanzetti.

One of the few remaining monuments dedicated to South Boston's Irish heritage.

The site where Charles Dickens gave his first public reading of "A Christmas Carol" in the US.

An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

The massive machine creates cracking displays of indoor lightning.

The site of Paul Revere's historic two lantern warning.