Ornamented with "Bristol Diamonds," this exotic shell grotto is considered to be the finest surviving example from the eighteenth century.

For fans of the stained glass art of Irish illustrator Harry Clarke, this church is the place to be.

One of the oldest lighthouses in the world, this structure was built more than 800 years ago.

Originally commissioned as a sculpture to reflect the history of Belfast's red-light district, the final sculpture has been banned from Belfast public land.

A quartet of tiled art pieces adorn the floors of this prestigious art museum.

An 18th-century religious argument etched into stone.

A miniature statue of a beloved character from children's literature.

On Nobel Street, a miniature statue of Alfred Nobel.

It’s fun to stay at the YMCA… but at this London outpost, it’s even more fun to eat the Bombay aloo.

Visit the last surviving outlet of a once popular chain of coffeeshops.

Eat the ultimate iteration of Portugal's most beloved pastry.

One of the most historical literary characters continues to stroll his hometown.

Designed to commemorate the king's coronation.

This pub has roots dating back to 1430.

Every birth, death, and marriage is recorded in these color-coded leather-bound books.

This modern work of art was a refreshing addition to one of the oldest theatres in the city.

A pair of mosaics marks the spot where the last accused witch of Dundee was put to death.

Atop this arch, during the 16th-century, a sermon was given to those suffering from plague.

The English Civil War began right here in 1642.

An engineering error ensured this cavernous 350-foot-long subterranean thoroughfare was never used as intended.

A historic fortification critical to Anglo-Scottish conflicts now serves as a bed and breakfast.

The smallest chapel in Europe is a moving testament to the love between a husband and wife.

When the tide is high, you can see the Atlantic pushing up through a deep, jagged hole in the rock.

Ireland's most northerly island is hauntingly beautiful. Its lighthouse was the last glimpse of home for many Irish emigrants bound for the U.S.