Trying to make a window for a room,How can i make a screen that displayes what a camera in unity sees?

So I’m trying to make a window for a room. The building that the character is “inside” is on top of the map. But the physical room is under. So I’m trying to make a window so it looks like it’s still on top of the map,I’m trying to make a window for a room. The building is on top of the map and the room is under.

Use VideoPlayer. In settings select Render Mode “Camera Near Plane”. And attach Camera