This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The block of aged dairy is probably still edible after 2,300 years in a peat bog.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

This supermarket offers shoppers a window into the past alongside their groceries.

The enchanting archway is the only surviving portal into Dublin’s lost medieval wall.

A mysterious plaque to the even more mysterious "Fr. Pat Noise," killed in "suspicious circumstances."

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

A gated cross stands on the site where an Irish revolutionary met his end.

A stunning Victorian abbey and walled garden on a lakefront.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.

An oddly conical beacon perched atop beautiful Irish cliffs.

The remains of the furnace and iron works that produced the massive Hudson River Chain still stand in the woods of New York.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

A historic Black graveyard hidden in the parking lot of one of America's largest malls.

The real-life site of Ichabod Crane's infamous gourd attack.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The bronze uniforms commemorate the vital role of women during World War II.

A devastating booze inferno poured through the streets, claiming several victims who drank it.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

The next-door homes of two very different musicians, George Frideric Handel and Jimi Hendrix.

A living memorial to the trees London lost during the Great Storm of 1987.

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