2300-year-old Roman road connecting the empire.

Hundreds of protractors affixed to surfaces all over the city.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

This massive blockhead sculpture hides an entire library.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Go inside to really appreciate this 500-year-old technological masterpiece.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

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

Iceland's largest lagoon is home to stunning multi-colored icebergs.

Vast stretch of tide-pools with a unique Moroccan charm.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

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

The celebrated eyesore created by starry-eyed sweethearts.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

The 100-year-old public collection of a New Hampshire dentist that contains taxidermy, Native American artifacts, and a pair of mummy hands.