The most loyal of little dogs, or a Victorian era publicity stunt?

A memorial dedicated to the Tejano superstar Selena Quintanilla-Pérez.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

The entire length of the border is marked by a 20-foot-wide slash through the trees.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Overlooking the spot where the Pilgrims boarded the Mayflower stands Devon's answer to the Colossus of Rhodes.

The bugs crawling down the front of this office building are almost as big as a '68 VW Beetle.

This national park on the shore of Lake Michigan features remarkable dunes that lie at the heart of a Chippewa legend.

Walk up a ramp through a forest for panoramic views of Lake Michigan.

Restaurant in Northern Wisconsin comes with a unique feature: a grassy roof covered in living goats.

America's post-nuclear-attack chambers of Congress.

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

Thousands of jack o'lanterns light up Halloween at this historic West Virginia home.

This odd-shaped relic from the 1964 New York World's Fair found its way back home to Wisconsin.

This was once the largest four-sided clock in the world (yes, even bigger than Big Ben).

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

The trials and tribulations of marking Poe's grave.

After a traumatic encounter with a six-foot eel, one Galway baker started making a daily loaf of sourdough in its shape.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

A hugely vast Irish landscape of barren rock that stretches for miles.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

Live long and prosper in Tennessee.

This work of engineering is imbued with elegance and ingeniousness.