Svampen, Water tower and observation point in Örebro, Sweden.

Svampen is a concrete rain shelter on Stureplan in central Stockholm, designed by Holger Blom and built in 1937. It consists of a slender central column 3.3 metres high supporting a long cantilevered circular roof, constructed by Erik Vretblad. The structure was demolished in 1988 and a copy was re-erected in 1989.

Svampen was designed by Holger Blom and built in 1937, with its concrete structure engineered by Erik Vretblad. It was inaugurated on 20 November 1937, though critics including architect Ragnar Östberg disliked it. It served as a kiosk and meeting place until the 1967 right-hand traffic reform, was demolished in 1988, and a copy was inaugurated on 19 October 1989.

Stockholmers call it Svampen, Swedish for "the mushroom", after the round canopy on its slim central column. For decades it served as a kiosk, a meeting point and a rain shelter until the 1967 right-hand traffic reform ended the tram service. When the structure was demolished in 1988, protests led to a copy being inaugurated on 19 October 1989.

Svampen stands at a busy junction of Stureplan, so reach it on foot from the surrounding pavements and cross at the marked crossings. It is an open rain shelter with no staff, no lift and no café; the canopy on its central column gives cover at any hour. Look for it near the Stureplan square in central Stockholm.

At the Christmas lights switch-on on 20 November 2011, city commissioner Ulla Hamilton unveiled what she took for a tree and four Santas; it was four squirrels in Santa hats advertising an American film.