The European Spallation Source (ESS) is presently under construction in Lund, Sweden. It is the next step in providing a powerful neutron source for bio/material and fundamental physics research. The facility's capabilities will exceed those of existing neutron sources while the high power capability requires a different design compared to existing sources. A superconducting long pulse proton accelerator and a rotating tungsten target are part of the design challenges. I will present an overview of the accelerator, target, and some of the instruments design and progress with a focus on the international collaboration designing and constructing the accelerator.