Flickr user Calvin Seibert likes to mess around with geometric designs. He's built dozens of sandcastles that look more like the imaginings of M.C. Escher than your typical overturned sand bucket creations. Some of them even evoke the contemporary style of today's museums, convention centers, and sports arenas. That's quite a feat considering Seibert's working with sand. He talks about his inspiration for these unique temporary structures:
Building sandcastles is a bit of a test. Nature will always be against you and time is always running out. Having to think fast and to bring it all together in the end is what I like about it. I rarely start with a plan, just a vague notion of trying to do something different each time.
Once I begin building and forms take shape I can start to see where things are going and either follow that road or attempt to contradict it with something unexpected. In my mind they are always mash-ups of influences and ideas. I see a castle, a fishing village, a modernist sculpture, a stage set for the Oscars all at once.
When they are successful they don't feel contained or finished. They become organic machines that might grow and expand. I am always adding just one more bit and if time allowed I wouldn't stop.
View a sample of Seibert's work in the gallery and for more, visit his Flickr page.