1632-ing

Like the series Ring of Fire/1632 or the Buffy/Forgotten Realms fanfic "Every Silver Lining has its Cloud"...

The idea is to take Place A and place it in Setting B.

IE) 2000's Grantville into the 1632 Germany or Sunndydale into Toril...

So which city/town/etc... would be best/worse/most interesting... to be place in which setting?

Like Marvel's New York in Girl Genius's world, The Village Hidden in the Leaf in the United Republic from the Legend of Korra, and so on....

Thoughts...