The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

"The Most Boring Road in the State."

This 19th-century former train station’s unusual roof shape earned it a rather witchy name.

This quaint stretch of road is the final resting place for hundreds of America's four-legged veterans.

One lonely, modern pyramid has gone from corporate think tank to deserted boondoggle.

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

Michigan’s most famous shoe tree.

The former home is said to be haunted by the ghosts of the beloved mayor and his wife who lived here.

A series of 33 stone markers maps an ancient 55-mile transportation route.

The smallest useable chapel in Michigan is five-by-eight feet and has seating for three.

One of the few working locomotive roundhouses in the United States.

The world's longest known cave system.

Former self-sufficient mental institution now a planned community.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

A fitting attraction for the corn capital of the world.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.

Gnarled canopies of pink and purple wildflowers arch over the trail to the summit.

A Florida college boasts the world's largest single-site collection of structures designed by Frank Lloyd Wright.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

Cryptic messages embedded in the New York City sidewalk.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.