15thc perception on swallowtail merlons?

[MarcoP]

Thanks for all the research you put in, Marco, I added Barcelona as well.

Thanks to you for reviving this interesting research line!

Does the map thing work well? It's the first time I use this function. I tried embedding it in the forum but this doesn't seem to work.

The map is great. I am curious to see what it will look like in a year or so....