While often grouped with the many office towers of La Défense business district, it is actually located half a mile to the northeast in a smaller mixed use complex called Centre Charras, of which it remains the highest building.

[1] It was envisioned stricty as a housing tower, but security regulations of the time capped the number of floors that could be used for residential purposes to thirty, so the rest was converted to offices.

The renovated space was reintroduced to the market under the upscale name "Tour Ciel" (English: Sky Tower), in an attempt to align its image with the skyscrapers of the more prestigious La Défense district.

[14] Between 1970 and 2006, Tour Les Poissons' façade bore a large sign for insurance company UAP (later AXA), which co-developed the Zodiaque project in a public–private partnership with the city of Courbevoie, and stored its computer servers on the tower's office floors.

[15] In 1970, UAP commissioned architect Pierre Dufau[16] to build a second, taller skyscraper based on the same structural design[1] at La Défense, which opened in 1974 under the name Tour Assur.