The is a quality-of-life modification created by the Civ 6 modding community (specifically, it is widely known as the "Detailed Map Tacks" mod by the modder astog ). It is hosted on the Steam Workshop and is available completely free.
However, the vanilla game has a notorious quality-of-life issue: the planning process is often done blindly or requires a photographic memory and a notepad. You place a generic map tack to remember where you wanted a Campus, but you have no idea if that +4 Science bonus you calculated in your head will actually happen until you unlock the district and hit "build." Civ 6 Detailed Map Tacks Mod Download Free
When you place a tack for a Commercial Hub, the mod calculates the potential bonuses from adjacent rivers, harbors, and districts immediately. It then displays this number directly on the map tack icon. The is a quality-of-life modification created by the
A: Yes, but all players must have it installed. If you host a game with the mod enabled, any player without it will desync or see placeholder graphics. You place a generic map tack to remember
In unmodded Civilization VI, the Map Tack feature allows you to place markers on tiles. These markers act as reminders. You can place a "Campus" tack on a tile to remind yourself to build a Science district there later.