France: Dress modestly in churches and remove your hat
Do
Dress modestly, covering shoulders, knees and midriff
Take off your hat, silence your phone and keep your voice low inside
In summer, carry a light scarf to cover your shoulders when needed
Check the signs before taking photos; ask staff if unsure
Don’t
Don't walk in front of people who are praying
Don't touch statues or eat inside the church
Don't use flash or take photos where it is forbidden
French churches rarely check clothing at the door, but revealing outfits are seen as disrespect toward a place of worship, and some churches may require modest dress and refuse entry to those who are not. Follow the notice at the door or the church's website.
Never go down onto the flats alone: the incoming tide can move several times faster than walking pace, and the quicksand and fog have killed — a safety taboo locals stress again and again
do not feed the island's many gulls, which will dive to snatch food
do not use flash, talk loudly on the phone or eat and drink in the abbey cloisters and church
Never walk across the circular traffic of the square — the many radiating streams of traffic have no pedestrian crossings and it is extremely dangerous
do not climb the stone railings at the base of the arch or carve or scribble on the reliefs
do not sit or lie on the tomb steps, eat there or take loud selfies