Northern Ireland's Brobdingnagian stepping stones.

A retired military stronghold on the rolling green coast of Donegal.

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

A blooming house of worship for the masses.

Made by a man on a worldwide sanitation crusade.

An imperial fortress city that incorporated cultural elements from the entire Mughal empire, only to be abandoned the year it was finished.

The world's second-largest sundial, made entirely out of stone.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

The mysterious empty cupola behind the monumental arch points to an ancient prophecy of Delhi.

A small museum contains one of the largest collections of ethnic and traditional headgear in the world.

Tens of thousands of tiny bottles stuffed with various items.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

St George's Leprosy Museum depicts the gruesome afflictions of those suffering from the disease.

A favorite with sightseers, this Norwegian funicular provides easy access to a stunning view of Bergen and its environs.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

A man has revenged his true love's betrayal through tears and stone genitalia.

This homeless brass fox tugs at your heartstrings from the foot of a Stockholm bridge.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.