re: #145 arethusa
I know Athens has only one of the 22 venues they built still in regular use. But Rio does often host the PanAmerican games and major soccer tournaments, perhaps they can reuse venues better than other cities.
In Atlanta they extended bus routes out to the burbs (where some of the venues are) For the most part they go unused because the busses come so infrequently. MARTA (the Atlanta commuter train/ bus authority) is fair, at best