Personal shelter with phone booth, Modernist shelter with phone booth in Biel/Bienne, Switzerland.

The Personenunterstand Bahnhofstrasse 16a is a round shelter on Guisanplatz in Biel, its circular concrete roof carried by a single prefabricated reinforced-concrete pylon. Two windbreak walls of steel-glass windows in horizontal rectangles converge on the centre, where the glazed telephone booth stands; wooden benches line their lower parts. A ring of light behind opal-glass panels under the roof edge outlines the floating circular form after dark.

The shelter was designed by Ernst Berger and built in 1928–1929 on Guisanplatz, where Bahnhofstrasse, Aarbergstrasse and Güterstrasse meet. In 1929 Eduard Müller added expressionist decorative painting. The structure was moved slightly in 2000, and in 2003 the canton listed it as worthy of protection in building group T. A nearly identical variant followed in 1930 at Kreuzplatz (Brüggstrasse 2b).

The shelter's name comes from its two functions: a waiting shelter and a glazed telephone booth at the centre of the round roof. The expressionist decorative painting under the roof edge was added in 1929 by Eduard Müller. The round form is underlined at night by a ring of light behind opal glass panels.

The shelter stands on Guisanplatz, where Bahnhofstrasse, Aarbergstrasse and Güterstrasse meet in a large roundabout; it is set slightly off the Bahnhofstrasse axis. The underground toilets are closed, and the glazed phone booth no longer works. The structure was moved a short distance in 2000, so its position differs from the original 1928–1929 site.

The shelter was moved slightly in 2000, so it no longer stands on its original spot on Guisanplatz. A nearly identical twin, built in 1930, survives at Kreuzplatz (Brüggstrasse 2b), letting visitors compare two versions of the same design.