Which building is behind?

brown

Sunny one (look at the windows which are cut off by the one on the left)

Right one

I love optical illusions... there should be more of them on here

The lighter building is behind

The orange one. If you look close parts of the grey cover the AC units and windows on the side of the orange building

On the left

The one on the right

Left is in front the edges on its side follow a pattern. The brown one doesn't have ledges or else the would be going in the middle of Windows and ac units

The building on the right is behind

It looks like two buildings standing next to each other with the photographer standing directly in front of the grey building pointing the camera in between both buildings to make it appear as if one is in front of the other

The tan one

uuuhhh....oooohhhh.....fk...

For the record, the left one is actually infront, you can see some parts where the left one covers the bottom of a window on the right, and some where it covers the top.

holy crap that's trippy

Right

The left one is in front

The left on is behind, the balconies only stick out on the building to the right.