Ich mache diesen Sommer Urlaub in Deutschland/Polen und werde etwa zwei Tage in dieser Gegend verbringen. Könnt ihr mir irgendwelche Orte empfehlen, die ich besuchen sollte?:)

Rügen for nice beaches, holiday resort, some wildparks!
It’s the island north of Stralsund, reachable via train, car and IIRC even bicycle.

Schwerin for the castle!!!
Lübeck for the history

Wismar, Heiligendamm, Warnemünde, Nienhagen

If you go by car, and want to feel some of the real spirit of the place, i recommend stralsund (museums, culture) as a city, lubmin as a getaway (beach is superb) and for culinary reasons the small harbor village of Freest in the vincinity of Lubmin, best Fischbrötchen of all Norddeutschland.

Island of Usedom is amazing!

Allenstein. Many lakes, quality and inexpensive food.

So, On the Island in the upper right, there are very coll cities and stuff like that

Spent a week on vacation in Usedom and it was a central place for visiting other attractions around. You could go to the Seebrücke Zinnowitz, close by you can visit Schmetterlingsfarm ( I recommend biking to the place from Usedom, rent a bike from Fred Kruggel), drive to Nepperminer Fischpalast for dinner ( sits by a lake and provides a really good ambience for dinner) , visit the Wasserschloss Mellenthin for coffee, beer or their famous waffles. You can also drive to Poland ( swinoujscie) and explore the town or hop on a ship at the Adler-Schiffe Przystań Pasażerska at visit the famous lighthouse or just a trip around the creek . Also a drive to Heringsdorf beach would be fun so Enjoy 🎉🎉

Schwerin is worth it if you want to see the castle and the castle park. Otherwise, the city doesn’t have much to offer. Rostock is a must if you don’t come around that often. If you fancy the beach and beautiful nature, be sure to visit the Fischland Darß Zingst peninsula (Ahrenshoop and Wustrow in particular are 10/10). Stralsund is also very nice to look at, but a bit sleepier than Rostock.

Schwerin, Wismar, Stralsund, Rügen Island (especially Binz or Sellin), Warnemünde, Lübeck with Travemünde.

Nobody mentioned Stralsund yet? The Ozeaneum is very cool, and the old town is cute.

Lübeck has such a beautiful city centre