The ruins of an ancient stadium that hosted gripping chariot and horse races.

Hidden in plain sight on a pair of Manhattan subway tunnels are a pair of public instruments that sing to each other.

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

The first of Lancaster's "rural cemeteries."

The oldest farmer's market in America is so ancient it was approved by the King of England.

"X" marks the spot of an echo chamber in the middle of a plaza.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

This haunting tombstone comes complete with a heartbreaking story of love and loss.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Sports history, made in the Arroyo Seco.

A bigger-than-life pun that has become a beacon of altruism.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

Go inside the house that inspired L. M. Montgomery to create one of literature's most beloved heroines.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

The oldest working bell set in North America, the bells at Old North Church sat silent for their first four years in Massachusetts.

Three prestigious academic collections come together to create a world-class natural history museum.

This impressive Boston holy house is the American mecca for Christian scientists.

American revolutionaries and British soldiers alike are buried here in the fourth-ever cemetery in Boston.