However, you could use a descriptive phrase in French, such as:
* L'escalier monumental de la Place d'Espagne: This translates to "the monumental staircase of the Spanish Square," which accurately describes the landmark.
* Les marches espagnoles: This is a more direct translation using the French word for "Spanish," but it might not be as clear as the previous option.
Ultimately, the best option will depend on the context of your communication.