decode UTF-8 to ISO-8859-1

I am using the Google Maps API, it return in utf-8,

so for some countries, caracters are wrong,

My server is ISO-8859-1

So, how to convert the result from utf-8 to iso-8859-1 ?

I tried :

<cfprocessingdirective pageEncoding="UTF-8">
<cfcontent type="text/html; charset=UTF-8">
<cfset setEncoding("URL", "UTF-8")>
<cfset setEncoding("FORM", "UTF-8")>

and

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

No change. always the wrong caracters,

Thanks for any help with this mess.

Pierre.