This is in Las Vegas:

This perhaps in your kitchen:

With the words of Jim Termeer (the designer of the tiles):

This is a set of 25 ceramic tiles. The patterns are based on satellite imagery of major highway interchages that have been built worldwide. These interchanges are some of the most expensive public works projects that take place- which we simply take for granted. However, as seen from space they are beautifully complex and graceful. Materials: 15" x 15" white ceramic tiles with black glaze. The set includes of the largest interchanges worldwide.

(found via Jürgen and BLDGBLOG)