Belarus is the country in the East of Europe. Since 1991 it is an independent state. Nowadays it has Poland, Lithuania, Russia and Ukraine as neighbors. Belarus is out of Schengen agreement, but since 2016 tourists from 80 countries of the world (including EU and the USA) can travel via Minsk International Airport without visas.
The country is quite big. For example, there are 6 main cities in Belarus with population over 100 000 people. Hence these are: Minks (the capital), Brest, Grodno, Mogilyov, Vitebsk, Gomel, and Bobruysk. All of them are very interesting destinations for a day trip. That is why, one can travel between these cities by trains of buses.