Paris

"You know how many Frenchmen it takes to defend Paris?" "How many, Dugan?" "I dunno. They've never tried."

- Dum Dum Dugan and Gabe Jones Paris is the capital city of France.

Capture of Paris
Paris was captured by the German Armed Forces during World War II. This event became an object of mockery among the Allied troops, often asking how many Frenchmen would take to defend Paris, answering that none knew, as they never tried.

HYDRA Desertion
In 1943, Johann Schmidt and his HYDRA division went rogue, separating themselves from the Nazi regime and intended to nuke the capitals of all countries that would resist his conquest, including Paris.

Hunt of Bruce Banner
Paris was one of the potential locations of Bruce Banner after his track was lost following an incident in the jungles of South America. General Thaddeus Ross, responsible of the hunt of Banner, figured that he could be anywhere in the world, even in Paris painting landscapes.

Vanchat
In 2013, a group of S.H.I.E.L.D. agents stationed at Paris were tasked with the retrieval a Chitauri Neural Link that had come into the possesion of the international criminal Vanchat following the Battle of New York.

Agent Grant Ward infiltrated a restaurant disguised as a waiter in order to scan and replicate a set of fingerprints. Despite the Rising Tide published the location of the item, Ward entered into Vanchat's safe house and used the fingerprints to access a hidden safe behind a fireplace, retrieving the item.

Ward had to fight two guards, but was able to defeat them and access the rooftop, where he was extracted via helicopter.