Here is a series of photos of the Eglise Saint-Etienne-du-Mont, which is located just behind the Panthéon in the Latin Quarter in Paris. The current church was built from the late 1400s into the early 1600s, replacing earlier religious buildings on the site.
The Michelin Guide called the façade of the church "highly original... The church is Gothic even though it is 16C." I couldn't get inside the church to take photos because mass was being celebrated when I arrived. Remember that you can click on the photos with your mouse, or tap them with your finger on a tablet, to see them at a larger size, in more detail.