Since someone mentioned Chicago alraedy and I live there I'll give you the guide to my native country, Poland...I dunno if that counts...Country is the the size of Texas so just one town would be little info.
Most beautiful city, Krakow, view of center, city is very old
royal castle in Krakow
Zakopane, mountain part of Poland, stunning
2 lakes in Zakopane one must see if there...top if Morskie Oko (Eye of the Sea) and Czarny Staw (Black Pond)
Gdansk, where my SO did his higher ed, it's by the Baltic Sea
Warsaw, the capitol, main area
old picture of a Soviet style building, still standing, called Castle of Culture in transaltion
City of Malborg, has a gorgeous castle
and the Polish female soccer team...j/k
There is lots more...these are the highlights thou...when taking a 5 week trip around Poland these were mostly my destinations