I built mine specifically for a space in my house in MN when I completed the lower level in 2003. The bar is simply oak plywood, oak crown molding, oak 1x stock, and 2x4s. It is technically 3 pieces (top, long front and corner) that I bolt together and screw the top down from the underside. I've moved twice across the country and it breaks down easily and is transported easily.
It's 8 feet long, 44 inches tall and 20 inches deep. You can stand comfortably or sit at the tall chairs that I have for it.