Sidewall Structure

Sidewall Structures (aka cliffside buildings), as the name suggests, are buildings that can only be constructed on the side of the cliff walls. The buildings they provide are important to prepare for transition to the mid-game.

Their UI category color is golden yellow.

They are unlocked at Honor Points level 3.

Buildings

 * Vertical Solar Station
 * Vertical Wind Turbine
 * Vertical Battery Station
 * Wall Garden
 * Epic Waterfall
 * Monument Park
 * Wall House
 * Vertical Hotel
 * Vertical Air Purifier
 * Vertical Indoor Crop Farm
 * Vertical Salad Farm
 * Vertical Vineyard

Tips and Tricks

 * Cliffside buildings allow mid-game players to move some of their buildings to the cliffside to free up more building space on clifftop for other purposes, e.g. for Industry buildings, which can only be built on the Top.
 * This is very helpful in mid-game when a larger industrial base is needed.