The glass pillar /Sergel fountain

In Sergel's Square. In the fountain basin there are a large number of larger and smaller fountains. A special finesse is 64 round, glazed openings in the pool through which one can consider the fountains from the Sergel arcade from below. It took until 1974 for the fountain's accent to be in place, crystal vertical accent, a glass collumn, illuminated from the inside and designed by sculptor Edvin Öhrström. Wikipedia