@Gulo gulo: Space for a new elephant exhibit? Absolutely no problem: Area behind the Aquatic Bird House and the Center for Global Conservation (which would already have a pond) OR the area between Zoo Center, World of Reptiles, Northern ponds and the Milu/David's Deer exhibit (and put the temporary butterfly house somewhere else) OR the area between Himalayan Highlands and Jungle World Road (and remove the cranes to another exhibit) OR use the Asia Parking area from level Shuttle Station down to the monorail tracks and remove the parking zone to the left of the Bronx River Entrance (accross the river of the Bronx River Parking), OR, OR, OR...
As for the costs: Of course it won't be cheap. But comparing the costs to built an ordinary house in the USA and in Switzerland (where it is more expensive), I doubt that an elephant exhibit of a similar standard would become more expensive in New York Bronx (not Manhattan!) then in Zurich. (Although, I must confess, I'm not very familiar with the real estate market in N.Y.)
Finally, I'm also interested in the opinions from other zoochat members.