Shift 3-5 up. I don't think the new WTC holds close to the same brand recognition as The Twins.

Personally I'd probably rank the Top-5 post 9/11 as:

1. Statue of Liberty

2. Empire State Building

3. Times Square

4. Rockefeller Center

5. Chrysler Building

There's probably some fair arguments that these other buildings could make the top-5. In particular I think you could possibly swap out one of Rockefeller Center or The Chrysler Building for any of the below.

1. Yankee Stadium (well pretend Old and New are similar enough)

2. The Gugenheim

3. Madison Square Garden (I might be stretching with this one)