Not really -- it isn't steampunk but Jules Verne's submarine the Nautilus
In 1994 the 200th anniversary of the French Nat'l conservatory for arts and trades included a makeover of the metro station to turn it into a tribute to the industrial revolution.
This year for the 30th anniversary of the 1994 bicentennial they polished everything up, and it is like a free theme park ride. Well worth checking out!
Here's some info from wikipedia:
The station on line 11 has been completely covered since October 1994 with copper plates riveted to each other, and not the usual earthenware tiles. This dressing was put in place during the bicentennial ceremonies of the Conservatoire National des Arts et Métiers. It is the work of Benoît Peeters, French screenwriter, and François Schuiten, Belgian designer, authors of the series Les Cités obscures.
The traveller is plunged inside a vast machine, a sort of underground Nautilus evoking the atmosphere of Twenty Thousand Leagues Under the Seas, in steampunk style. On the station's ceiling, a series of large cogs evokes the Musée des Arts et Métiers. Copper, the only material used, evokes the technical and industrial world. On the platforms, a series of portholes open onto small scenographies, centred on the museum's collections. You observe a armillary sphere, the Telstar satellite, or even a water wheel. All the station's furniture suits the decoration style and constitutes a unique case on the network. Name plates, wooden seats, waste bins, flat tunnel exits, alarm post banners and the lighting are brown in the Ouï-dire style. However, the latter do not have multi-coloured lighting and the light is diffused in a semi-subdued way on the track side. The platforms are devoid of advertisements.
When you're in town, check it out!
https://www.sortiraparis.com/en/what-to-visit-in-paris/history-heritage/articles/307878-did-you-know-why-does-arts-et-metiers-station-look-like-a-submarine