Buildings:
Material Maker
It produces 200 Materials every 30 seconds
Arms Dealer:
Here you can craft several items, ammunition and some buildings
Ammo Factory:
Here you can craft cheaper ammunition and some utility
but they are low tier only.
Science Center:
Here you can upgrade your weapons and items plus crafting experimental items such as the
shockwave generator
Comet Catcher
occasionaly it will crash down some comets which you can later harvest it for T2 Materials
needed for things like the FAE rocket
Fortification:
Dragon Teeth
The Dragon Teeth is more expensiver than the Czech Hedgehog but it gives more protection
Czech Hedgehog
The Hedgehog is cheap to build but also easily destroyed