I created 3 different types of Poster Styles: retro-futurism, Ukiyo-e and block print style. Then I added the text of the city name with Photoshop. Some attempts to place the text with midjourney worked quite well.

1) a realitic view of Berlin Germany, travel poster, retro-futurism style, pastell colors, happiness mood --ar 2:3

(Text added PS)

2.1) Ukiyo-e tokyo travel poster, cinematic, bird view, white paper frame with black letter wording "TOKYO" lower edge --ar 2:3

 

3) a realitic view of florence, travel poster, block print style, happiness mood, font Baroque Antiqua times new roman wording "firenze" lower edge --ar 2:3

(Text added PS)