A dozen U.S. presidents have stayed at the historic resort, which was known as James Buchanan’s “Summer White House” from 1857-1861.

Visitors to Salt Springs State Park are encouraged to literally put their two cents in Penny Rock.

In the parking lot of a fast food restaurant, a statue memorializing a prolific bull elephant.

Inside this 150-year-old barn turned antique shop is a vast array of items for curios hunters.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

Dozens upon dozens of boulders engraved with scripture tell the story of one man's troubled life.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

The world's third-largest crystal sphere has sat in the Penn Museum since 1927 with the exception of one outlandish theft.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

A glittering Thai Buddhist temple in suburban Pennsylvania.

North America's oldest quarantine facility was built in response to Philadelphia's 1793 yellow fever outbreak.

Locals call this magical moss-covered walkway the "Emerald Path."

The Home and murder site of the witch of Rehmeyers Hollow.

America's first serial killer rests in anonymity.

This park contains a number of standing stones meant to heal and inspire.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

The first American department store, and home to the largest operating musical instrument in the world.

A failed piece of Orientalism has become the proud symbol of a community.

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

This Old Testament garden features 100 plants from biblical times.

The oldest surviving botanic garden in the United States.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

A park full of outsider art, created by college students studying outsider art.

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.