Could you please tell me the difference between " outside of" and " outside" ?

你能告诉我" outside of" 和" outside" 的区别吗？

He writes: Hi, could you please tell me the difference between outside of and outside?

你好，你能告诉我outside of和outside有什么区别吗？

I'm somewhere outside in between both of those buildings.

我在这两座建筑物之间的外面某个地方。