This is a unique Gothic architecture. The solemn and magnificent 201; glise Saint-Eustache St. Estash Church was built in the sixteenth to seventeenth centuries. Many French celebrities are baptized here after birth, receive the Eucharist and hold weddings and funerals. There is a huge organ built on the inner wall of the church, playing touching religious music during Mass. There are the true works of Flemish painter Rubens.
Paroisse Saint-Eustache Moriel was baptized and married here, where Louis received the Eucharist when he was 14 years old, and where Mozart buried his mother (Wikipedia said). Rubens'works are also collected in the church. A very grand and tall church with complex walls, which I have not seen in other churches in Paris yet comparable.