This interesting motif of a salamander eating a stalk of corn is found on Rue de Grenelle.  The art nouveau double door is part of pair, each with a salamander.  Apparently, this greedy one got the corn.

The building was designed by architect Jules Lavirotte in 1898, his first major building.  The façade, influenced by the French Rococo style, offers only hints of the theatrical displays for which Lavirotte was to become known.  He designed at least nine buildings still standing in the 7ième arrondissement.

151, rue de Grenelle
75007, Paris
Métro La Tour-Maubourg