For the colosseum do i just get +2 to culture for each city? also does 6 times include the tile the citycenter ocupies?

[Prof. Cabbage]

If anyone has an optimal configuration for the colosseum to let it get in at least 3 or 4 city centers it would be helpfull.

[SneakyPanda]

+2 culture for each city that is within 6 tiles. I am not sure on an answer to your second question.

[paugus]

Build the wonder in a city that's centrally located between at least 3 or 4 other cities within 6 hexes. I don't know what exactly you're asking for, it seems pretty self-evident. Maybe go back and read the exact wording on the bonuses again.

[Dray Prescot]

I think that Colosseum has its six tile range of effect from its location, NOT from the city center of the city that built it.

When dealing with ranged effect buildings/Districts/Wonders you have to think of where you be be building them, before you place the new city centers that will be (hopefully) using them in the future.

The 6 tile ranges do not count the base tile it is located at, but do include the tiles the city centers (that are getting the benefit bonus) are located on.

There are also two late game Great Engineers that will increase the range to 9 tiles for ONE District, Tesla for Industrial Districts, and a different one for Entertainment Districts.

Unfortunately, the recent change to Civ 6, cancels getting multiple bonuses from several loctions. Now you will only get the best benefit of it's building type for each city that is in range. I used to have cities getting bounuses from 3 or 4 Districts (of the same type) at the same time.