What are the huge balls on a golf course for?

QUESTION:
I’ve seen these large balls on a golf course. They are usually multi colored. What are they used for?

ANSWER:

Answer by Sean
I believe you are talking about the tee boxes, where you first tee up your ball to hit (your first shot). There are 2 big balls (markers) and you must tee your ball up in between and behind them, so everyone tees off it around the same area. The reason there is a few on each hole is because there’s ones for the Men’s, Women’s, and Junior’s (may vary depending on course) the Men’s are typically farther back then the Women’s and the Women’s are farther back then the mens. Hoped this helped 🙂