A highly-criticized monument in Budapest has become the site of a makeshift Holocaust memorial.

A statue in Budapest's Liberty Square honors the former U.S. president's efforts to end the Cold War.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."

Single runway interrupted by a busy road that cuts across its middle.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Historic medieval fortified city in southwest France.

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

A little sculpture with a large wardrobe.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

This unique sculpture is often overlooked by pedestrians.

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

A 19th-century perch for spotting sailing ships now boasts one of the most iconic views in the Southern Hemisphere.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The FBI's urban training course may have the highest fake crime rate in the world.

The resting place of a Civil War celebrity's amputated limb.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

Castle and secret tunnel withstood a siege until its owner was killed by the Holy Roman Empire, while sitting on the toilet.

This one-time health resort was used by aristocrats around the world.

The fairy tale castle of the "fairy-tale king."

A small but immensely extravagant palace built by the "Night King."

This doorless 20th-century elevator doesn't stop or slow down.

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

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.