Hello @Cecilia... thanks for your post.
I am back here with some new pictures.... I changed some settings and technique of postproduction. I changed the structure of the city a little and here are some of the first results.
Here is a little schematic map of the city at first


And here are some of the photos
Isola Tiberiana, Roma


panorama of the city with the Mtthias church Budapest /Hungary/, and Jasna Gora Czestochowa /Poland/


Not only big countries have big architecture Dom Svatej Alzbety Kosice Slovakia


and another panorama with the House of parliament London, and Le Mont Saint Michel and Eiffel tower


Palais Trautson Wien, Austria and Vittoriano monumento Roma up on the hill


The promenade with the buildings of small European countries /Pejacevic castle Croatia, city buildings of Bratislava Slovakia, Palaca Sekulic Plavsic Croatia, or Earth museum Sarajevo, Bosnia and Hercegovina


The big square is comes .... With the Grand Palais Paris France


or the Swedish parliament


to continue soon