Sonoma’s Graton Resort & Casino placed the final beam of top of its new six-story hotel this week, marking the halfway point on a $175 million expansion expected to be complete by fall of this year.

The expansion includes a six-story, 200-room hotel with a bar and lounge, a 10,000-square-foot spa with a resort-style pool and 20,000 square feet of event and convention space. With $800 million already invested in the casino, this expansion brings the whole project to nearly $1 billion.