The World's Largest Bull.

This 16-foot-diameter wooden coin has been standing in Iowa City since 2006.

One of the few beardless depictions of Lincoln, George Grey Barnard's 1917 was denounced by many—including Lincoln's own son.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

It's easy to see why this eclectic architectural wonder has been dubbed the "Spaceship House."

Thousands of pieces of art have been carved into the rock at the site of an ancient volcanic eruption.

A museum devoted entirely to the rattlesnakes and snake-related art.

Monument to the cotton-destroying boll weevil.

Since it formed millions of years ago, this cave system has been a sacred burial ground, a Prohibition-era speakeasy, and the center of an amusement park.

Spectacular mineral formations fill these caves, which have been used for everything from smoking meat to stashing illicit liquor.

This claimant to the title of "smallest church in the 48 states" doubles as an equally tiny, quasi-post office.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

The highest bridge in America was built for an almost unnervingly small amount of money.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Constructed by the younger brother of George Washington.

A simple but powerful tribute to the 20 victims of the 1692 witch trials.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

This museum sits on the site of a decommissioned military communications base.

Poland's oldest surviving university building holds a wealth of historic science instruments including some used by Copernicus.

A monument celebrating the idea of reaching inaccessible places.

A historic presidential getaway on the continental United States' southernmost island.

The marble facade hides a little-known medical museum with early surgical instruments and rare copies of canonical texts.

The site of one of history's most indelible and horrific tragedies.

This little replica of Lady Liberty provides a bit of NYC in a Japanese city.