Can you rename a sim?

Can the name you see on the map for the sims be changed, and how is this done? And if so is it easy?

Sim owner files a ticket, pays, and done.

Thank you for the fast response. How much do you have to pay? (is it in real money?)

If you don't want to pay for a name change just shake your screen a couple of times. Beware of any crabs that may come crawling out.

From the Knowledge Base:

Can I rename my Private Region?
Yes. There is a US$50 charge to rename your island. The new island name must fall under the same guidelines:

* No more than 3 words
* A total of more than 3, but less than 20 characters, including the spaces
* Only alphanumeric characters; no punctuation please
* Not already in use
* Do not use the names of real-world cities and towns
* Cannot use "SL," "Second Life," "Linden Lab" or "LL" or other wording that could give the impression of direct association with Linden Lab
* Must be PG

To get the process started, submit a support ticket stating that you would like to change the name, and that you accept the fee.

Aren't there plenty of sims named after RL towns? Like that Cologne sim with the cathedral? and Morocco, and Roma, etc etc? Am I missing something?

Well seeing as how one sim name actually got duplicated (making it essentially impossible to teleport to the second one), I'm guessing they don't exactly check the names as closely as they should.

Also, I believe there are a whole group of "famous city" sims in the northeast part of the old continent. I assume those were there before they put the "no city names" rule in. Either that, or it doesn't apply to mainland sims... I live in the Korean sims section, and mine is named after a Korean city.