is that a transparent curtain?
At first glance it really look as-though the curtain is transparent which gives the glimpse of a drawing room. But, in reality there is nothing behind the curtain and nor the curtain is see-through at-all.
It's the cleverly applied photographic paint on curtains that makes us fool.
BTW, this 3D room pattern curtain is a perfect fit for small space .. it has that capability to make your small living space look larger.