The artist Mark Grieve and Ilana Spector has raised a special kind of monument outside Santa Rosa in California. It’s constructed of 340 donated bikes all compressed into a 20 meter high obelisk that’s cleverly titled the “cyclisk”. Mark has apparently a thing for bikes and a lot of his previous work are made out of bicycle tires and other parts. This however must be one of his better pieces, although the foundation could have been more incorporated into the creation.