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

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

A pop-culture attraction outside of Dyersville, Iowa, hits a home run.

For just a few bucks, this Iowa funicular will let you feel like an 1800s fat cat.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

Stairs often replace streets on the steep slopes of this old mining town.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This historic national park is covered in the stunning ruins of red rock pueblos.

Stockholm's narrowest alley is barely over two feet wide.

Be(w)ar(e) the moat around this historic Czech castle.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

Unsurprisingly, Holland is home to one of the most magnificent flower gardens in the world.

Sweden's "good old days" painstakingly re-created in a model village.

Old Danish castle immortalized in Shakespeare's Hamlet.

Nordic giants resurrected from the sea and restored to their former greatness.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

A spiritual vortex among the red rocks in Sedona.

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

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

A giant bug impaled on a 75-foot-tall needle.