Famously misunderstood wonder of the ancient world

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

The celebrated eyesore created by starry-eyed sweethearts.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

A series of three shiny letters mark the boundary of an old refuge for those being pursued by debt collectors.

Once a training ground for Olympic athletes, this artificial ski slope has fallen into ruin after a fire in 2012.

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

A museum dedicated to the tragedy of Bloody Sunday.

WWII artifacts, including the building itself.

Harry Potter’s Hogsmeade Station is also a charming blast from the past situated in North Yorkshire.

Semaphore saints, a golden dragon's head, and a stone carved with religious warnings all call this cathedral home.

After public executions took place at this location, attendants would also attend a local horse race.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

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

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

A church that bred legends, and served as an inspiration for the Da Vinci Code.

Glasgow's own "tipsy" temperance monument.

Every St. Andrews student knows to avoid this inscription for fear of a martyr's curse.

This giant steel bear is a tribute to naturalist John Muir.

This bronze cat looks out over the Linlithgow Canal.