Parisian commuters may be surprised this week, as they step off the metro and into, well, a living room.

In their newest marketing campaign, IKEA has furnished four of Paris busiest metro stops with sofas, lamps and trompe l'oeil-like posters of cabinets and bookshelves.

Paris St. Lazare, Champs-Elyses Clmenceau, Concorde, and Opra subway stations have been invaded, or so says the brand. The concept behind the campaign is akin to a test drive. Passengers in transit can, via the bum test, experiment with the comfort and durability of IKEAs Ektorp and Kalstad couches and Brasa floor lamps.

Agence 14 Septembre, a communications group that specializes in architecture and design, collaborated with IKEA on the experiential initiative, which runs until March 24.

The Scandinavian furniture manufacturer delivered a similar campaign last January when they set up a faux oval office in Washington D.C.s Union Station.