The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

This natural spring not only claims to heal the wounded but it has also been willed to God.

One man's extraordinary topiary garden in a small South Carolina town.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

The world's largest fire hydrant is supposedly tornado-proof.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

A former major munitions plant that has been converted into a sprawling art space.

America's first federal monument.

An original apothecary from 1792.

At 207 feet, one of the world's longest continuous escalators.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

Largest Roman Catholic church in North America.