No, you haven't stepped inside a cartoonist's notebook. This is Shirokuro, a high-end sushi restaurant in New York City. The unique facility bills itself as the opportunity to "dine in 2D."
The New York Post tells us that the name Shirokuro means "black and white." All of the surfaces, including the furniture, have been hand-painted to look, well, hand-drawn. The resulting optical illusion designed by Mirim Yoo creates the impression that diners have entered a two-dimensional world.
Restaurateur James Lim first saw this design approach in South Korea, from which the style spread across East Asia until it has now arrived in New York City's Koreatown.
-via @KristinSpecialK