Las Vegas is a city located in USA and appearing in Top Cow and Marvel crossover, Witchblade/Wolverine.
After Kaylie erased both Sara's and Wolverine's memory and replaced them with fake ones, they got married in Las Vegas. Quickly after they started to recover their memory and were confronted by a gangster named Simyon Lebedev. Now in control of Kaylie, who has the Witchblade, he proceeds to attack Wolverine and Sara, indenting to kill them. In the end Sara manages to recover the Witchblade from Kaylie and Wolverine kills Simyon.