RollerCoaster Tycoon 3

Here you can build a deck and a porch. Walls come with this set. Also has an texture animated revolving door for use of hotels or other buildings you create!
Originally created by coasterfreak

Path covers, borders, ground tiles, and misc objects.

Originally created by Aceana

More path covers and borders.

Originally created by Aceana

Terrain coloured rock set.

Originally created by Aceana

Everything that just wouldn't fit in the other three expansion packs. Due to their conforming nature, some objects will be found under the 'Flowers' tab.

Originally created by Aceana

The pack contains various items to 'beautify' your parks' gardens.

Originally created by Aceana

This set contains a variety of fences, including diagonal versions.

Originally created by DasMatze

A set of mine tunnels and jewels to fill them.

Originally created by Park Manager

A small set of Proximity Sensors for your Coasters!
Originally created by @iEddiez

My first CS set comes from my final attempt to recreate Epcot's Test Track. The set contains 77 pieces including the track covers for the exterior loop, which are to be used with Loubauder's Test Track CTR with the vehicle positioning set to terrain level. Also there are crash test dummies, road signs and other test-ish gadgets for you to use freely. Enjoy!
Originally created by Pate

A set of aircraft hangar custom objects. This set has several different arched roofs and a great variety of supports.

Originally created by stuk71

Road pieces with railing, signs, and supports.

Originally created by Pajpaj

A set of mostly tropical trees such as palms and bushes, but also lilacs, oaks, and cherry trees.

Originally created by Pajpaj

Created: 02/01/11. I quick little crate set that I wanted to make.
Author/Creator: 182470

Medieval Furniture
Author/Creator: Lassoares

Medieval Tent
Author/Creator: Lassoares

Medieval Castle
Author/Creator: Lassoares

Medieval Well and Monument
Author/Creator: Lassoares

Medieval Arqueduct and City Wall
Author/Creator: Lassoares

Medieval Temple
Author/Creator: Lassoares

A second set of Greek-themed objects.

Originally created by PhiWie

A small set of objects to create Greek-styled buildings.

Originally created by Phiwie

A set containing useful support pieces for building a wooden roller coaster.

Originally created by Phil

Rock-shaped pathway edging.

Originally created by Phil

Miscellaneous billboards.

Originally created by Park Novice