This opera house along the banks of the Connecticut River has two Tony Awards to its credit but it’s never staged a single opera.

Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

This classic steam-powered train takes tourists on a nostalgic trip around the Connecticut River Valley.

The ancient past meets the retro-future at these dinosaur tracks that are protected by a geodesic dome.

Originally dubbed "Retirement" by the Navy Commodore who built it in 1780, this beautiful mansion is now the centerpiece of a suburban community park.

Vermont's hills are alive with the sound of music at this historic hotel.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.

Once a thriving business district, this former shopping area is now an urban ghost town in the heart of the city.

This lovely tree was a thank you gift from the man known as "Public Enemy No.1."

A faded sign from the 1920s remembers Baltimore's resistance toward banning alcohol.

A winding district gerrymandered into the shape of a mantis.

Meet your friends, marry your true love, or tell your enemies to kiss your butt under this historic Pittsburgh timepiece.

When oil was discovered just outside of Pittsburgh, the city became home to this regional stock market.

The site of the climactic scene from the classic horror film is now a historic landmark.

At 207 feet, one of the world's longest continuous escalators.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The Lincoln Memorial has inspired many, even though a word on the inscription appears to be spelled incorrectly.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Perhaps the most scandalous statue of America's first president.

A little marble compass above George Washington's (empty) tomb in the Capitol marks where D.C.'s four quadrants intersect.

This small museum gives visitors a chance to soak up the history of the "sponge capital of the world."

One of the oldest, tallest, and most haunted lighthouses in America.

This natural spring is the winter home to the largest gathering of manatees in the world.

Intricate, eye-catching, award-winning rubber sculptures liven up this Pennsylvania town.