A miniature golf course crafted inside the world's largest simulated cave.

The singer, actor, and activist lived here during his final years, and now it’s a museum dedicated to his legacy.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

This historic furnace was once used to produce cannonballs during the Civil War.

This restored log building was one of the first toll booths for travelers along the Northern Turnpike.

Built in the 1970s, this curious modular home found new life as a sundae-shaped ice cream stand.

The souvenir got the company’s founder out of a pretty pickle at the World’s Fair.

An unusual and eclectic collection of local historical memorabilia.

Originally a cemetery, this city park remains speckled with a handful of scattered gravestones.

A curious building honoring past and current members of a historic musical comedy troupe.

The oldest continually operating golf course in the United States.

Alexander Hamilton’s creation caused quite a bit of controversy.

This sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

The corporeal remains of Napoleon III's dentist rest under this 15-story obelisk.

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

Surrounded by industrial sprawl, a small monument marks the site of William Penn's first landing in Pennsylvania.

This recreation of a 19th-century dime museum is full of oddities.

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

Priceless space junk on display in front of a local Dairy Queen.

Arlington Cemetery exhibit dedicated to death and grieving.

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

This decommissioned surface-to-surface missile resides outside the American Legion Post in Pennslyvania.

Francis Julius LeMoyne built this crematory in 1876; he was the third person to be cremated here.

The last remnants of Fort Pitt also hold the distinction of being the oldest structure west of the Allegheny Mountains.