Sky-Hochhaus, High-rise building in Bietigheim-Bissingen, Germany

The Sky-Hochhaus is an 18-storey tower, 67 metres tall, on Bahnhofstraße in Bietigheim-Bissingen. Its facade alternates curved white projections that form continuous balconies with darker glazed bands; the balconies shift by 90 degrees from floor to floor. The lower ten floors hold offices of 95 to 345 square metres, while the upper eight contain 24 flats of 67 to 172 square metres and two 200-square-metre penthouses.

Construction started in 2014 on a former freight yard site and was completed in 2016. The project transformed an unused industrial space into a modern mix of commerce and housing.

Locals call the tower "Langer Jürgen", a nickname recalling Oberbürgermeister Jürgen Kessing, who was in office while it was built. The name plays on the building's 67-metre height and on the mayor's first name, and it stuck after completion in 2016.

The building has a narrow base of 24 meters wide on a 3,300 square meter plot, which required specific architectural design solutions. The vertical layout with commercial spaces on lower floors and residential units above makes it accessible to different user groups.

The building's balconies are rotated 90 degrees from floor to floor, and their long, reinforced parapets vary in height along the facade to stiffen the outer edges and limit deformation at the top. The core keeps the same polygonal shape on every storey.