Did you ever actually baby proof your house?

I was reading something recently about creating a safe environment for a child where they spend all their time instead of baby proofing a whole house. Did you just create a safe space for your child? Or did you actually go through your whole house and try to make everything safe?

We let our kids mostly roam around the house. We close most doors so the majority of the time is spent in the living/dining/kitchen areas. So we had to do some things like lock cabinets. We also have outlet covers throughout the house. Other than that, we haven't done too much baby proofing.