DUO (originally Hervantakeskus) is a shopping center located in Hervanta, Tampere, Finland.

[1] The shopping center is part of the central axis of Hervanta designed by Pietilä, which is a nationally significant entity of public buildings.

[4][5] The old part of the shopping center, designed by Raili and Reima Pietilä, has features that are characteristic of the architecture and Art Nouveau style of the turn of the 19th and 20th centuries.

The building is a kind of mix of a European market hall, a train station and a winter garden.

[6][7] In 2007, an extension was completed for the shopping center, which was designed by Arkkitehtitoimisto Eero Lahti Oy.