Location of the first public performance and singing of the "Battle Hymn of the Republic."

The final resting place of a free Black soldier who played a pivotal role in the Battle of Bunker Hill.

In 1777, two men were killed after being struck by lightning at the same time.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

First a root beer ad, then a golf course clubhouse, and finally a massive teapot.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

Sections of the iconic limestone columns have been left uncleaned as a reminder of the city's polluted past.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

This historic Pittsburgh tennis complex is a rare example of natural red clay courts.

The god of wine stares out at passersby on this busy Pittsburgh thoroughfare.

These disused steel furnaces are now haunting ruins that may one day be a national park.

Ohio's 19th-century communist micro-society.

A throwback train ride transports passengers through one of the lesser-known national parks in the country.

This national landmark is also home to a massive treehouse.

The highest point in Indiana is curated by an Eagle scout but may be in danger of losing its record to a nearby garbage pile.

In this relatively flat state the highest point is an honored place.

The world's longest known cave system.

Over 20,000 sets of spice shakers reveal the surprisingly telling history of our most basic spices.

An ode to "The Queen of Appalachia."

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

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

Small caves once used as a hiding place for some of those accused during the Salem Witch Trials.

A monument to the winner of the 1946 Boston Marathon, Greek runner Stylianos Kyriakides.