As Steady as a Mountain!
The base of a wind turbine is like its feet. Just like you need strong feet to stand up tall and not fall over, a wind turbine needs a sturdy base to stay upright, especially on windy days.
This base is called the foundation.
To make this foundation, people use lots of concrete and steel. Concrete is a super tough material that can last a long time and not break. Steel is used inside the concrete to make it even stronger.