This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

The ghost town that ended up on Ebay.

A pair of large white marble lions guard this stretch of the Mojave Desert, and it is utterly mysterious how they got there.

The only museum and archive west of the Mississippi that is dedicated to the study of Abraham Lincoln.

Quite simply the largest tree in the world (by volume).

The "world's biggest dinosaur" once housed a creationist museum in its abdomen.

This 24-acre park offers a place for meditation in the midst of Sedona's iconic red rocks.

A spiritual vortex among the red rocks in Sedona.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

This English-inspired Maryland garden is home to acres of opulent plant life including bushes shaped into an entire fox hunt.

Slated for demolition, this house was relocated piece by piece.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

Although built to generate electricity for Marylanders, this dam has become an all-you-can-eat buffet for American bald eagles.

The Decoy Capital of the World.