**
From San Francisco - (across Golden Gate Bridge) - Highway 101 North to
  Highway 37 East. Exit at Sonoma/Napa.  Turn left at the stoplight onto
  Highway 121 at Sears Point Raceway.  Highway 121 intersects with HWY 29.
  Turn left onto HWY 29N.  Exit at First street/Downtown Napa, veer right.
  Get in the far left lane.  Make a left on California Blvd.  We are on the
  left side.
**(Across Bay Bridge) - HWY 80E to HWY 37W, at Marine World Parkway.  Turn
  right at intersection of HWY 29, continue north toward Calistoga.  Exit
  at First street, turn right at the stop sign and left at California Blvd.
**
From Sacramento - 
From HWY 80W to HWY 12W continue on HWY 12 pass the
  Chardonnay Golf Club.  Turn right at the 2nd stoplight onto HWY 29N.  Exit
  at First street/Downtown Napa, veer right, get in far left lane.  Make a
  left on California Blvd.  We are on the left side.