Are there English toponyms that are pluralia tantum? [closed]

There are toponyms that are pluralia tantum in a few languages. What come off top of my mind are Mediterranean cities in classical languages, such as Athenae and Pompeii. A modern example I can come up with is Karlovy Vary (literally, Charles' Baths) in the Czech Republic.

These toponyms are plural not only morphologically but also syntactically. For instance, this paragraph from the Czech Wikipedia article on Karlovy Vary starts off by saying that it is a regional city: Karlovy Vary jsou krajským městem. Here the copula jsou is in its plural form.

I am wondering if similar toponyms exist in English as well. Cities like Las Vegas or Los Angeles are plural morphologically, but I don't think anybody says "Los Angeles are beautiful in winter." The second paragraph of the Wikipedia article on The Bahamas reads "The Bahamas were inhabited by the Lucayans," but I'm not sure if this is strictly about the country, or they are talking about the islands.

Well, there is this part of the English country called "The Downs"; you write "The Downs are …" rather than "The Downs is" (ref.).