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

A shining sculpture made of 3,115 lights, the number of visible stars in the Northern Hemisphere.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

A display of magnificent stained glass windows is the first exhibit of its kind.

The birthplace of Appalachia's only first lady, who some have dubbed the United States' "first female president."

In a city crazy for seashells this museum educates and amazes visitors using the wonder of cast-off exoskeletons.

A Museum of Holography frozen in 1974.

Each of these gorgeous, intricately decorated rooms is painstakingly crafted to the scale of 1 inch: 1 foot.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This working class sculpture pounds his hammer all the livelong day.

Couple's personal collection of pinball machines turned public pinball museum.

A wall of chewing gum moonlights as collective art.

The world's longest known cave system.

Kentucky, Tennessee, and Virginia meet at this point in the Cumberland Gap.

Once the most flame resistant building in the country, the South Carolina Historical Society building was almost burnt down in a fire.

Dental instruments from the illustrious history of American dentistry.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

The U.S. Supreme Court's secret Cold War relocation facility in the mountains of North Carolina.

Andy Griffith's hometown has made itself up to look like the fictional town of Mayberry.

The highest point in North Carolina and the United States east of the Mississippi River, Mount Mitchell is named after argumentative explorer Elisha Mitchell.

A former Oz-themed attraction that has fallen into disrepair, but still holds some of the original magic.

This popular Boston haunt is reminiscent of a time gone by, when slow cafes and sweet-smelling smoke wafting from patios was the norm.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

A former waterfront market is now in the center of town due to some interesting Boston engineering.