At the moment, thanks to cheap airline corporations, we have plenty of various tourist destinations, affordable from Poland. If you like, you can go to New York to visit your family, or to Australia for holidays of your lifetime. Beside, a lot of Polish travelers are selecting metropolis of western Europe, such as Barcelona and London. But there are many of other alternatives, less popular, but also really attractive.
Have you ever been to Scandinavia? When not, you need to reserve flights to Sweden, right now. This great place is finest in time of summer. It's warm, but not to much, so it's ideal for sightseeing. You need to get a trip around Stockholm, the capital of this land. It is filled with amazing monuments. First of all, you will be able to
explore in there very great Evangelic temples, and even Catholic ones (watch). The oldest are from Medieval period. If you are a fan of exhibitions, you'll find in there many of various galleries about writers, sea, history and so on. Also, you have to go to Malmo, very charming city located at the South part of country - it is next reason to reserve flights to Sweden.
Maybe your relatives came from east of continent, like from former Polish lands, that are now a part of Ukraine? If that's right, you have to reserve flights to Lviv. In that city you could find plenty of interesting objects connected to our country, like art exhibitions and another museums. Beside, it has beautiful architecture (explore here). Maybe it isn't so well renovated like buildings in Wroclaw or Krakow, but it's still very pretty.
After you choose flights to Lviv, you could consider to have a trip (use this link) trough whole Ukraine, this huge country has a lot to offer for tourists.
When you're searching for less conventional destination for holidays, you could go to Sweden and Ukraine. This countries are very amazing, both have plenty of monuments, every traveler will find anything for himself in each places.