TETRA PARCO is a small light architectural structure: the body with a square section is composed of two separate volumes by two uprights supporting the light source. At power-on, this ephemeral structure disappears from sight, transforming into two beams of geometrical light which creates a suggestive alternation of light and shadow on the floor. TETRA PARCO is an efficient tool for the lighting of open spaces, pedestrian areas and urban zones.