You take 4 bricks square one end inside touching each end build as tall as you want then you need to wire it or go solar
Here are some tutorials.
Do you want to run electric? Or go solar?
This is a great project that adds so much to your house I'd like to do something like this and build a mailbox...
Naomi posted the video I was going to post so I found you a few more. There are several videos on YouTube that show you different ways to make one here's a link to that page. Take a look and find which one is best for you. I think you hwelped me find one of my next projects. Have fun !!!