I can't see any of my neighbors from my house, nor can they see me. I consider underground safer than above ground... I won't run into it (gee, I NEVER hit anything with my tractor...), or throw stones from the mower at it. The kids won't climb on it. I also didn't want a 500 gallon tank sitting between the house and the pond, right in my view
I had the excavator here anyway, digging the hole for the house foundation. Someone from my propane supplier came down to supervise the installation.