mont st michel

It’s been 1,000 years since the laying of its first stone. https://www.pbs.org/newshour/world/mont-saint-michel-celebrates-1000th-birthday Credit reddit user datvm for image.

Is there a thing such as too far from the City Center to build a wonder? So I want to build Mont St. Michel which requires to be built on floodplains or marsh. I only have one marsh tile in the city but it's 5 tiles away from the City Center and it says "no suitable location to construct this."...