Putting surfaces have been expanded by 25 per cent and reshaped to offer more variety and challenge.
Contractor works alongside PGA Tour golf course architect Leslie Claytor to update drainage and bunkers.
Owner of California club spends $119m to “create a private club like no other”.
New 14-hole par-three QuickSands layout has holes varying between 60 and 180 yards.
Architect’s plan for Minnesota layout is to “energise a hidden gem that has great natural attributes”.