In July 2015 I decided to visit in Poland its two main cities, Warsaw, the capital of the country and Krakow. A country that did not have among my plans but that had a lot of history to tell. The minimum stay to visit these cities are 2 days in Warsaw and 3 in Krakow including one day for excursions.
They are cities in which the main things can be visited walking and if necessary you can make use of the metro.
The best time to visit them is in the summer months, which is when temperatures are highest but it is also when there is more rain.
These are the main places to visit in each of them: