In context : A case in Time : clocks, quadrants or meridians in Paris
(From : Dali's Solar Quadrant). Continue on Saint-Jaques street then turn right into Galande street, going around Saint-Julien-le-Pauvre Church, and cross Lagrange street to get to de l'Hôtel-Colbert street then on to de la Bûcherie street, which you'll take to the right up to de la Tournelle embankment. Proceed eastbound through de la Tournelle bridge and finally the Île Saint-Louis. From here, take des Deux-Ponts street, facing you, and turn right into Saint-Louis-en-l'Île street. Look at the church's clock. Is it parallel or perpendicular to the street ? The answer, in French, will be your third clue. Now you should have three French words : form a 4th one with the 4th letter of each of the first three (tip : this is an english word). This will be the password to unlock next stop.
The church is named after the king of France Louis IX, also known as Saint-Louis an as an Holy Crusades enthousiast. It was build in the second half of the XVIIth but not without much interference : the roof collapsed in 1701 during a storm, and a campanile was struck (and destroyed) by lightning in 1740...
The present bell tower was thus build only in 1765. Its distinguishing feature is its openwork design. Openings were pierced to ensure better resistance to the wind (the 1701 storm was still remembered).