One of my favorite drives in the United States is the magnificent Pacific Coast Highway in California. I've done that drive, or at least part of the drive, at least a dozen times. One of my must see stops on the road is the Hearst Castle in San Simeon. Built in between 1919 and 1947 by newspaper magnate William Randolph Hearst, the "castle" contains 56 bedrooms, 61 bathrooms, 19 sitting rooms, 127 acres of gardens, indoor and outdoor swimming pools, tennis courts, a movie theater, an airfield, and the world's largest private zoo.
The castle materials and most of the interiors were built / furnished with materials, artifacts, and art from Europe. The indoor pool in this image was made to look like a Roman bath, and it's walls and ceilings are made of 1" square mosaic tiles. There are eight marble statues that are positioned around the pool. It is a pretty amazing pool to view and photograph.