One question I am asked often is how I created the aqueduct in "Steven's Coasters And Karts"

Believe it or not, there are no cheats required, and it is in fact very simple! Use Terrain Surfaces!

What Are Terrain Surfaces?

Terrain surfaces were included in the "Soaked" expansion pack, and have a variety of uses. To find them, simply go into the "Scenery" menu, you will find them there.

Here we see a variety of different entrance types, although those are very useful, we will need to scroll down to see the terrain blocks.

As you can see, there is a large selection to choose from.

How to use Terrain Surfaces

These terrain surfaces can be useful for putting terrain on top of buildings. You might wonder why one would want to do this, however this can be useful for creating surfaces for putting plants on, and it also has the advantage of allowing ride supports to appear there.

In this example, I have constructed two buildings, one of which has a normal roof, the other has a terrain block on top of it. Notice how the building with the normal roof does not have ride supports on it, whereas the building with the terrain block DOES have supports!

Terrain blocks are a handy way of having ride supports in places where you might not normally be able to, without using custom scenery.

The terrain blocks will have the same texture as the ground immediately below them, so keep this in mind when placing them.

Underground Caves

Another useful feature of terrain blocks is their ability to "invert" the ground. Placing a terrain block underground will "hollow out" the ground to create a cave, or underground space.

This can be useful for creating things such as aqueducts, and bridges for a zoo. In the aqueduct example, I simply created the river, and used the terrain blocks to "hollow out" the arches of the bridge.

In this example, I have created some raised water. This could also be a zoo enclosure, or for that matter, anything!

I am going to use the Large Terrain Blocks in this example.

Here I have placed it underground, so that it aligns with the edge of the raised surface.

One the tile is placed, it "hollows out" the area. Place several more blocks to make a larger cave.

And once this is done, you have a hollowed out area! Place an "underground" path to complete the illusion.

Continue, until you have an "aqueduct"

And now you can place walls inside if you want.

All you have to do now is experiment with different wall sets, until you find one that works best for your project.