While knives are the main feature in this store, visitors will also find dinosaur bones and meteorites.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

What appears to be an ancient Roman temple is actually a Catholic church.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

Two stone columns flank the grand Venice square, but there were supposed to be three.

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

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

CERN's beautiful, bending sculpture is a tribute to the spread of knowledge.

Large Hadron Collider and the Birthplace of World Wide Web.

This colorful but controversial ceiling has been likened to a 21st-century Sistine Chapel.

One of the longest wooden benches in the world snakes around Geneva's Treille Promenade.

London's smallest police station is barely the size of a phone booth.

The fences outside some of South London's estates are made from recycled World War II stretchers.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

This influential Renaissance-era library was once the haunt of kings and monks.

The facade of this 16th-century building is decorated with carvings of 300 seashells.

The first mechanized factory in Spain is also one of the most significant mints in the history of money.

A controversial art piece that harkens back to local folklore.

This magnificent castle grew from a small Moorish fortress, and reportedly inspired two iconic Disney castles.

These "mermaids" that surround a plaza in Segovia are rather sphinx-like.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

This mansion turned restaurant was once a pitstop for Al Capone during his travels.