incredible construction of the tetrahedron in german bottrop taken from below against white sky. a walkable steel structure

amazing amusement architect architecture art attractions awesome background backgrounds beautiful below black bottrop building climbing construction dump engineering europe future futuristic german germany incredible industrial industry interesting landmark mine north park pattern people photos places platform rhinewestphalia shapes silhouette sky staircase stairs steel steps structure taken technology tetrahedron tetrix tourist travel walkable wallpaper white