These unusual houses look like giant boats that washed ashore on a residential street.

This unique sanctuary invites you to interact with the beautiful birds.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

The biggest solar telescope in the world helps reveal the secrets of our sun.

Take a monster truck tour around an ostrich farm in the middle of the desert.

The cinder cone volcano with a less than complimentary name.

A geological mystery on Camelback Mountain.

A mysterious "wedding cake" castle in the middle of the urban desert.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

A Tucson museum and performance space full of found-object movable sculptures.

In Tucson a giant metal snake helps pedestrians cross a busy highway.

One of the world's largest telescopes, stares into the night sky with two huge mirrors.

Open since 1938, this diner has kept its fountain, malt machine, and all the gum that greasers left beneath its counter.

Thousands of Mexican Free-Tailed Bats soar around an abandoned storm drain at sunset each summer.

All of the 20 occupied houses in this mostly abandoned town feature some curious display of junk art.

Witnessing the might of this dessert-colored desert waterfall is a rare, powerful treat.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

One of the largest, oldest, darkest, quietest motel rooms in the world.

A self-built castle made by a mysterious man.

This futuristic bridge is one of the longest self-anchored pedestrian bridges in the world.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.