For six months of the year, three giant mirrors direct a pool of sunshine onto this otherwise occluded town.

One of the most breathtaking railways in Europe also takes one of the steepest climbs, from fjord to mountain plateau.

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

Home to three historic ships from the age of Vikings.

This bird-loving brewery is situated in an old municipal bathhouse, nestled beside a 300-year-old windmill.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

Cat art as far as the eye can see.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

A guitar mounted on a wall in Temple Bar honors the Irish musician.

The modern birthplace of Irish freedom.

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

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.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

A quiet memorial to those who died saving others in the heart of the City of London.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

This coffee shop lies hidden beneath a historic church.

A cluttered and astounding collection of antiquities and curiosities.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

A student driver's nightmare.

Eighty million natural history specimens call this gargantuan museum home.

Overlooking the burial ground is a tower designed to prevent thieves from snatching the recently deceased.

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