HITMAN World of Assassination

I recommend using the Mercenary outfit for most of the areas and bringing a lockpick. The names of areas you have found show up on your pause screen map.

Level 0
Chardonnay Field (Lower area of the grapefield)
Cinema (Lower right area of main building)
Fermentation Room (Right side of the Production Facility in the main building)
Grape Shed (The building in the grapefield)
Grapefield Roads (The main path in the grapefield)
Malbec Field (Upper section of the grapefield)
Production Room (Main area of the Production Facility in the main building)
Staff Locker Room (Top left area of Production Facility)
Staff Restroom (Top left area of Production Facility)

Level 1
Barrel Room (Middle area of the upper Production Facility)
Tech Room (Left area of the upper Production Facility)
Wine Fridge (Right area of the upper Production Facility. Enter through the ledges in the Barrel Room).

Level 2
Armory (The upper room in the Secret Tunnel)
Backside (The rightmost edge of the map, snaking path)
Bathroom (Just above Reception)
Boatdock (The uppermost area, a little way above the Parking Lot through the Gardens)
Dance Floor (Open area between the Parking Lot and Reception)
Fermentation Atrium (The roped-off room right of Reception)
Grapefield Cliff (Lower left snaking path between the first playthrough starting area and the grapefield)
Parking Lot (The primary entry point for subsequent playthroughs, the broken circle on the map left of the main building)
Parking Area and Tunnel (Left of the Parking Lot)
Reception (Leftmost area of the main building)
Secret Tunnel (Hallway between the Security Room and Backside)
Security Room (Above the Fermentation Atrium and right of the Bathroom)
Security Tunnel (Top left corner of the Parking Area and Tunnel)
Tasting Room (Lower room of the building)

Level 3
Asado (Upper floor of the outside party area)
Higher Gardens (the rightside of the top left area of the map)
Lower Gardens (the middle of the top left area of the map)
Silo (Structure at the top left edge of the map)
Villa Basement (Lower floor of the mansion)

Level 4
Security Checkpoint (Where you start on your first playthrough, the notch at the lower left area of the map)
Viewing Platform (Atop the Grapefield Cliff path)
Villa Back Yard (The garden behind/above the mansion)
Villa Foyer (The main room of the mansion)
Villa Front Yard (The parking/staging area in front of the mansion)
Villa Guest Room (Right of the Villa Foyer)
Villa Living Room (Left of the Villa Foyer)

Level 5
Villa Back Balcony (Balcony on the upper side of the mansion)
Villa Bathroom (Above the Villa Bedroom)
Villa Bedroom (Corner of the floor farthest from the stairs)
Villa Front Balcony (Balcony on the lower side of the mansion)
Villa Office (Landing area atop the stairs)
Villa Roof (Left of the main floor)

Level 6
Villa Attic (Open the ladder in the Bathroom or climb a pipe from the Villa Roof)