No visitors allowed

No visitors allowed is a lot assignment in The Sims 3, available since launch, and serves as one of the twoThree if hangout counts. catch-all assignments in the Sims 3 era along with Visitors allowed. Maxis developers most commonly gave this lot assignment to:
*Lots with almost only rabbit holes.
*Lots without any particular features on it (e.g. car parking lots).
*Subworld camps.
*Harvestable gardens.
*Occasionally by mistake.
As the name indicates, the Maxis dev team did not intend for townies or most other NPCs to visit such lots (and certainly not to enter any doors on such lots) unless they were visiting rabbit holes; but as a result of various oversights in the game's coding, NPCs will sometimes try to visit such lots anyway.
==List of notable lots==
Due to the very large amount of "No visitors allowed" lots across the many The Sims 3 worlds, especially in later expansion packs and Store sets, the list below should not be taken as a definitive guide.
===Al Simhara===
====Camp Sun====
*A tent.
*A campfire.
*A small toilet.
Located on the south bank, directly accessible from downtown Al Simhara by car.
====Camp Moon====
*1 tent.
*1 campfire.
*1 toilet.
*Butterfly Spawner (Egypt) - Mix.
*Many bushes.
Occasionally used by adventurers to the main pyramid area.
====Camp Earth====
*1 tent.
*1 campfire.
*1 toilet.
A common stopover for Sims going to or from Abu Simbel or the azure ocean coast.
===Champs Les Sims===
====The Rose Campground (East Old Forest)====
The two versions of The Rose Campground both have one tent, gendered roofed toilets and sinks, a campfire, and many trees, though they're not 1:1 clones of each other.
====The Rose Campground (Flower Drive)====
===Shang Simla===
====Abandoned Barn====
*3 treasure chests.
*2 small piles of ancient coins.
*1 campfire with 2 ghost chairs.
*Some hay.
*2× Seed Spawner China 1.
*Seed Spawner China 2.
*Beetle Spawner (China) - Assassin
*Fishing Spawner - China, Koi 2
====Camp Chrysanthemum====
*1 tent.
*Gendered toilets and sinks.
*1 campfire.
====Camps Peony, Orchid, and Lotus====
Camps Peony, Orchid, and Lotus are No Visitors Allowed lots in Shang Simla. They feature tents and toilets so that Sims can rest during adventures. They all look much the same.
====Han's Orchard====
Han's Orchard is a pretty No Visitors Allowed lot in Shang Simla. It is a great park for gathering rare fruit like pomelos, and rare types of fish. It's clearly related to the hidden tomb called Han's Barn.
===Bridgeport===
====Overlook Point Subway====
*A subway station.
*A food truck parking spot.
*3 benches.
*1 trash can.
*3 small poles.
Serves as the sole subway station for the eastern hills.
===Lunar Lakes===
====Kelvin Pavilion====
*A campfire.
*Some tables, seats, and couches.
*A fountain.
*A labyrinth.
*2 trees.
While it bears faint semblance to hangouts, it lacks many facilities that are typically associated with hangouts.
====Crystal Mine====
*A telescope.
*2 spawners (Gems Epic; Meteor Huge)
===Lucky Palms===
====The Wishing Well====
*A wishing well.
*Some bushes.
====Wonderful Wells Community Garden====
*Many harvestable plants.
*A fountain.
*Some kind of pavillion.
It is not known why the lot has the No visitors allowed lot assignment by default, rather than e.g. Small park.
====Community Parking Lot====
*6 parking spots.
*2 lamps.
===Sunlit Tides===
====Seaside Sports Center====
*A stadium rabbit hole (The entrance arch is a rabbit hole in and of itself).
*A dirt oval track.
*Many toilets and showers.
*4 drawers.
*1 couch.
*6 parking spots.
*Various trees.
*Large open spaces with place for activities.
Though similar in the spirit to the dozens of "Rabbit hole and little else" No visitors allowed lots in the Sims 3 era, this particular lot has slightly more facilities than most others of them. The lot can be converted by players into a park (fairly easily), a gym (which takes slightly more effort), or perhaps even a live show venue with 1 or 2 Big Show Crowd floors (Hard to do, but possible).
====Mango's Military Base====
===Aurora Skies===
====Lend and Learn Library====
*Various bookshelves, desks, and couches.
*A small PC room.
*A playroom for child and toddler Sims.
*A fireplace.
*A central office.
*4 parking spots.
*8 bike racks.
*A fairly large backyard where players can place objects.
It is not known why the lot has the No visitors allowed lot assignment by default, when it was visibly designed to be a library and would thus have been given the Library lot assignment.
====Sundhöll Community Pool====
*3 outdoor swimming pools.
*Various lounge rooms with couches.
*1 coffeemaker.
*6 showers.
*4 parking spots.
*Close proximity to a lake that can be swum in if Patch 42 or later is installed.
It is not known why the lot has the No visitors allowed lot assignment by default, when it bears more resemblance to a public pool. Instead, Swim and Soak Station is the sole designated pool lot assignment in Aurora Skies.
====Fiskar Fishing Park====
*A fishing lake.
*2 campfires.
*2 barbecues.
*3 picnic tables.
*Some bushes.
It is not known why the lot has the No visitors allowed lot assignment by default, when it appears to function more akin to a fishing spot.
====Nature and Nurture Learning Academy====
*A school rabbit hole.
*A somewhat small library.
*A fake classroom with seating and desks for 9 "pupils", 1 "teacher", and 2 bookshelves.
*A more or less fake caféteria with picnic tables and coffeemakers.
*A small indoor playroom for kids and toddlers.
*An outdoor playground with 2 jungle gyms, 3 swings, a slide, and a terrain sandpit usable by all ages.
*2 trash cans.
*A small 14x8sq tarmac sports field. The field is empty by default; depending on the installed expansion packs, it can host basketball, one soccer goal, table tennis, bowling, or simply gym equipment, among other things.
*Many benches.
Its school rabbit hole is the smallest in the game (excluding the Lunar Lakes rabbit hole), but has many outdoor facilities and fake classrooms to fill the rest of the lot. NPCs will however usually not use any of those facilities unless the lot assignment is changed to Big park or similar.
===Dragon Valley===
====Dragon Tavern====
*1 refrigerator.
*2 juice bars.
*1 barbecue.
*7 bookshelves.
*1 chess table.
*7 tables.
*3 picnic tables.
*49 seats.
*1 couch.
*1 decorative well.
It is not known why the lot has the No visitors allowed lot assignment by default, since it strongly resembles hangout lots, and has enough seating to fit almost the entire population of the town.
===Isla Paradiso===
====Ichtaca Community Garden====
*Various harvestable plants.
*Some bushes.
*A small house with 2 bathrooms, a sink room, and a small room with only potted plants.
===Roaring Heights===
====Roaring Heights Visitor Center====
*A small reception of sorts.
*2 picnic tables.
*1 bench.
*1 barbecue.
*1 dumpster.
*8 parking spots.
==Notes==
*Worlds without any known No visitors allowed lots: Appaloosa Plains, Starlight Shores, Sims University, Oasis Landing.
**Worlds whose only No visitors allowed lots are rabbit holes: Barnacle Bay, Twinbrook, Bridgeport, Hidden Springs, Moonlight Falls, Midnight Hollow.
**Worlds that have lots with no lot assignment, in most cases due to the worlds preceding the formal availability of lot assignments: Sunset Valley (especially Mirabello Plaza), Riverview (most downtown lots), Bridgeport (Plumbob Pictures Backlot, some rabbit holes), Roaring Heights (Sixam Field, for unknown reasons).