For people, who have a broken savegame from between the 26. December 2017
and 1. January 2018, download the "MoreNaturalBeauty-FixChristmas2017"-file.

INSTALL:
Unpack Archive into your mod Folder, e.g:

linux: "~/.local/share/aspyr-media/Sid Meier's Civilization VI/Mods/"

Windows: "C:\Users\(USER)\Documents\My Games\Sid Meier's Civilization VI\DLC"

UNISTALL:
Delete the folder


Super simple mod that I have seen several people ask for in forums etc. Basically this mod will double the number of Natural Wonders on a map and cut the minimum distance between Natural Wonders in half. This is something I have wanted for a long time because I think Natural Wonders are a super cool part of the game.

New Number of Wonders by map size (updated 12/27/17)
Duel - 4
Tiny - 6
Small - 8
Standard - 10
Large - 12
Huge - 14

I have tested this with several mods and so far the only mod that is "incompatible" is the Yet (not another) Map Pack mod. I say "incompatible" in that you wont be able to both use that mod's larger custom map sizes (Enormous, Giant, Ludicrous) AND see an increase of Natural Wonders, those map size's default number of NWs are used instead. (12/26/17) Unfortunately I have still not had the time in my schedule to work on this particular issue, I am fairly sure that I need to create a way for the mod to search mods that create new map size values but I am not sure how to do that. 

Other than that this mod should be compatible with any mod as long as it does not mess with the NumNaturalWonders value or the MinDistanceNW value. 
Special thanks to Username4 from the r/civ6mods page for the advice on how to get started and suggestions on how to format the mod and for coming on board as a dev.

photo credit to HALLDOR KOLBEINS/AFP/Getty Images via http://archive.boston.com/bigpicture/2010/04/more_from_eyjafjallajokull.html