I started a game of Civilization 5 (BNW + G&K) and early on in the game I discovered a natural wonder called Cirro de Potosi, which is a mountain. When I discovered it, the advisor popped up and said that I gain happiness and get a benefit if the tile is worked (in this case +10 gold). I settled my second city right next to the wonder and I don't appear to be getting any benefit from this tile.
How do you get the benefit of natural wonders that are mountains? I can't assign citizens to the tiles and I am right next to the thing, which means it is within my borders, but looking at the city screen this new city still has 0 gold output, when I was expecting 10 gold per turn. I even advanced a few turns to see if it wasn't immediate but I still noticed no change.
3 Answers
To work a tile means you have a citizen on it, not a worker unit. To see which tiles are being worked, click on the city and enable manual citizen management. each tile within your borders will have a circle that is either gray (not being worked) or green (is being worked).
6In addition to what was said by VanBuzzKill, there are natural wonders that don't produce yield (food/production/gold/culture/faith/science) but give happiness - in case of these, you don't need to allocate citizen to work these tiles. Its enough to have the natural wonder within your civilization borders and you'll get the happiness boost.
As long as it is within the borders of your city, it should get a citizen pretty much automagically. If you have set manual specialists under the specialist buildings in the city details screen, this may affect this citizen placement.
Basically, if I want a natural wonder I try to put the city right up next to it, and it usually puts the next available citizen on it, kind of like a park ranger.