An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

Largest lake in Great Britain measured by surface area.

These slanted cubic abodes are a creative if odd solution to a zoning pickle.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

A bit of retro transportation flair preserved in the world's largest department store.

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

A painting to honor the oldest reserve squadron in the Royal Air Force.

These engineering masterpieces are a dominant feature of the Belfast skyline.

These murals stand as reminders to the troubled history of this Northern Ireland city.

These barriers stand as stark reminders of Northern Ireland's troubled past.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

An abandoned faux-pub made famous by a Guinness commercial.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

The modern birthplace of Irish freedom.

The oldest licensed distillery in Ireland.