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

A pre-Industrial Age iron furnace and the site of a nearly-forgotten piece of Black history.

A Civil War Museum with some notable medical antiques.

This suburban park recalls the history of a famous tavern. Despite the name, it's no ordinary place!

One of the last schoolhouses constructed in the early 20th-century still standing in Montgomery County.

The only public school for Black children in the region from 1895-1936.

The whole world in one water tank.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Tucked behind New Jersey's abandoned Gingerbread Castle lie the eerie ruins of a once-flourishing paper mill.

An approximately 500 million-year-old rock outcropping covered in fossilized bacteria.

Once in a state of dilapidation, this candy-inspired fortress is now being revived.