#1 Reservoir Frown

200 Thunderbird

California.

This one forms a giant Pacman.

Arizona.

This one forms one of the ghost from Pacman.

California.

This one forms a giant peace symbol.

California - The heartburn series.

Another giant heart.

This one uses a natural crater, along with 8 cache's to form a smiley.

This one is a series of puzzle cache's that spell NUTS

These are cache's that together, form pictures or symbols.