I see we've got a pattern going here.
And here it ends! As a former Spanish teacher I can almost certainly say that there aren't any cities that I know of in South/Latin America that begin with a "W". W is only used in words of foreign origin. I couldn't find any but maybe they exist.
Walla Walla, Washington
York Beach, Maine
"Faith sees the invisible, believes the unbelievable, and receives the impossible." ~ Corrie Ten Boom