diff --git a/EnvelopeGenerator.Web/appsettings.json b/EnvelopeGenerator.Web/appsettings.json
index 28e6cbe9..cd250566 100644
--- a/EnvelopeGenerator.Web/appsettings.json
+++ b/EnvelopeGenerator.Web/appsettings.json
@@ -119,5 +119,17 @@
     "AddedWho": "DDEnvelopGenerator",
     "ReminderTypeId": 202377,
     "EmailAttmt1": ""
-  }
+  },
+  "Regexes": [
+    {
+      "Pattern": "/^\\p{L}+(?:([\\ \\-\\']|(\\.\\ ))\\p{L}+)*$/u",
+      "Name": "City",
+      "Platforms": [ ".NET" ]
+    },
+    {
+      "Pattern": "/^[a-zA-Z\\u0080-\\u024F]+(?:([\\ \\-\\']|(\\.\\ ))[a-zA-Z\\u0080-\\u024F]+)*$/",
+      "Name": "City",
+      "Platforms": [ "javascript" ]
+    }
+  ]
 }
\ No newline at end of file
diff --git a/EnvelopeGenerator.Web/wwwroot/js/annotation.js b/EnvelopeGenerator.Web/wwwroot/js/annotation.js
index 555e9073..6d3fbd9c 100644
--- a/EnvelopeGenerator.Web/wwwroot/js/annotation.js
+++ b/EnvelopeGenerator.Web/wwwroot/js/annotation.js
@@ -108,6 +108,8 @@
 
         this.markFieldAsRequired(formFieldCity);
 
+        this.markFieldAsCity(formFieldCity);
+
         /**
          * Date, post code and place label part
          */
@@ -307,6 +309,7 @@
         return inch * 72
     }
 
+    //required
     static #requiredFieldNames = new Array()
     
     static markFieldAsRequired(formField) {
@@ -316,4 +319,15 @@
     static isFieldRequired(formField) {
         return this.#requiredFieldNames.includes(formField.name)
     }
+
+    //city
+    static #cityFieldNames = new Array()
+
+    static markFieldAsCity(formField) {
+        this.#cityFieldNames.push(formField.name)
+    }
+
+    static isCityField(formField){
+        return this.#cityFieldNames.includes(formField.name)
+    }
 }
\ No newline at end of file
diff --git a/EnvelopeGenerator.Web/wwwroot/js/app.js b/EnvelopeGenerator.Web/wwwroot/js/app.js
index a2c6ae9d..81a1717f 100644
--- a/EnvelopeGenerator.Web/wwwroot/js/app.js
+++ b/EnvelopeGenerator.Web/wwwroot/js/app.js
@@ -170,6 +170,8 @@ class App {
     async handleFinish(event) {
         const iJSON = await this.Instance.exportInstantJSON()
         const iFormFieldValues = await iJSON.formFieldValues;
+        
+        //check required
         const iReqFields = iFormFieldValues.filter(f => Annotation.isFieldRequired(f))
         const hasEmptyReq = iReqFields.some(f => (f.value === undefined || f.value === null || f.value === ""))
 
@@ -182,6 +184,20 @@ class App {
             return false;
         }
 
+        //check city
+        const city_regex = new RegExp("^[a-zA-Z\\u0080-\\u024F]+(?:([\\ \\-\\']|(\\.\\ ))[a-zA-Z\\u0080-\\u024F]+)*$")
+        const iCityFields = iFormFieldValues.filter(f => Annotation.isCityField(f))
+        for(var f of iCityFields)
+            if(!city_regex.test(f.value)){
+                Swal.fire({
+                    title: 'Warnung',
+                    text: `Bitte überprüfen Sie die eingegebene Ortsangabe "${f.value}" auf korrekte Formatierung. Beispiele für richtige Formate sind: München, Île-de-France, Sauðárkrókur, San Francisco, St. Catharines usw.`,
+                    icon: 'warning',
+                })
+                return false;
+            }
+
+        //check # of signature
         const validationResult = await this.validateAnnotations(this.signatureCount)
         if (validationResult === false) {
             Swal.fire({