In the airport of Rostov-on-Don, Southern Russia, VOX Architects designed a priority pass lounge based on the idea of ​​horizon, sunrises and sunsets. At the eye level of a standing person, a black profile draws the lounge perimeter circumscribing the space and dividing the field of vision in two parts: a high, ephemeral and blue one above the line, and a warm, brown, earthly one below the line. This line is the steppe’s horizon, caught in its blue hour. The sense of lightness and suspension is facilitated by the absence of a roof or ceiling, so the dividing walls, varied in heights, seem to thin out in the air, between colors, shadows and transparencies. These colored partitions are enclosed in thin metal frames that recall the black line above. Transparent layers and thin lines overlap each other in perspective, while in the center a large blue mirror sun increases the illusory depth of space.