World War II-era bunkers are hidden under the beaches of this picturesque park, which is still scattered with wartime watchtowers.

A small ballpark on Maryland's eastern shore pays homage to its favorite son, the most fearsome home run hitter of the dead ball era.

The stone marker that Mason and Dixon placed at the eastern end of the famous north-south border they surveyed.

This unassuming brick building has survived fires, storms, and more to bring entertainment to one Delaware town.

Macabre astrological automaton clock dating to the late 1400s.

An Austrian house of bones filled with hundreds of intricately painted skulls.

The site of Austria's biggest concentration camp now honors its victims.

Thousands of slain Soviet soldiers are buried within the shadow of this enormous obelisk.

This Slovak bridge is known both for its connection to a national uprising and its UFO-shaped eatery.

This Slovakian statue of an emerging sewer worker might just be a bronze peeping tom.

This spaceship sculpture in the middle of the Slovakian capital looks like it just crash-landed.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

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

Designed as a reminder of one of the darkest moments in Austrian history.

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

Beautiful tiles decorate many of the town's surfaces and stand testimony to its glorious artistic history.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Legends surround this natural rock formation that looks like a Moorish king wearing a crown.

This magnificent market stands as a poignant symbol of the suffering caused by the Spanish Civil War.

Down this yellow brick road, visitors are treated to toadstool houses and massive mushroom sculptures.

An agreement meant to honor the Duke of Buckingham led to this unusually-named passageway near Charing Cross.

A memorial for public executions that dates back to the 14th century.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.