There are some park replicas, and quite a bunch of coaster recreations. I guess most people dont make recreations because Planet Coaster gives us the ability to make our own dreamparks come to life. [big grin]
I'd say that most people don't make recreations because Planet Coaster gives us very limited tools, ride and stall options... I want to re-create Disneyland (California) in a Deciduous Biome, BUT...
1) No Snow Terrain Paint option in Deciduous Biome (Matterhorn)
2) No Red Rock Terrain Paint option in Deciduouse Biome (Thunder Mountain)
3) No "Gentle" Boat Ride (Jungle Cruise, Pirates of the Caribbean, It's A Small World)
4) No Submarine Ride option (Finding Nemo/Submarine Voyage)
5) No Bamboo and Thatch Roof Building options (Adventure Land, Jungle Scenery)
6) No Motion Simulator Ride (Star Tours)
7) No 3-D Cinema (Captain EO / Honey I Shunk the Audience)
8) No Arcade (Tomorrowland Starcade)
9) No Effective Dark Ride lighting options or tools (Snow White, Peter Pan, Mr. Toads, Alice in Wonderland, etc)
10) No Animatronic Dinosaurs (The Primeval World)
11) No Animatronic Animals (Jungle Cruise, Thunder Mountain, Splash Mountain)
12) Not Enough Spooky Scenery (The Haunted Mansion)
13) Ineffective Transport Ride System (Santa Fe & Disneyland Railroad)
14) NO CUSTOM IMAGES / BILLBOARDS
15) Forced PC Branding with No Generic Stall option (There is no Gulpee in Disneyland)
16) No Sports Car "Gentle Ride" option (Autopia)
Almost every single one of these omissions and / or issues was either included or addressed in RCT3... Aside from the actual building facades, it was much easier re-create real world theme parks in RCT3 than it currently is in Planet Coaster.
These are only the first SIXTEEN points that I thought of off the top of my head... There are many more.