At first you may mistake this for a photograph. So I am mentioning it here, so I don't repeat where magazines license the image, then change their mind when they realize it's not.

Wouldn't it be fun to have a basement room that looked like this? A great place for a pool party. Just don't fall in the big hole in the back yard while mowing the lawn.

Creating this many pillars individually would have been impossibly complex. I instead made a solid block, with a grid of negative cylinders inside, carving out the archways.