This is a Russian Orthodox church located in the 8th arrondissement, one of the 'posh' arrondissement in Paris.
The church was built on 1861 and became the first Russian Orthodox church in France
The church is influenced by the Byzantine style and architecture.
The neighborhood is mostly residential, and it is quite interesting to walk around and see how the up scale Parisian live.
Combine it with a stroll in Park Monceau or a walk to Arc de Triumph