As the major transport hub of Lithuania Vilnius offers multiple day trip possibilities using public transport or car. The most interesting ones are:
1.The historical Trakai town with its medieval island castle, many lakes, and ethnic Karaim minority. It is the most popular day trip from Vilnius. It is easy to reach by bus and by train (28 km to the west).
2.Rumšiškės open-air ethnographic museum is a collection of 19th-century buildings relocated from all over Lithuanian countryside. 78 km westwards it is well connected by a four-lane Vilnius-Kaunas highway that is traversed by frequent buses.
3.The Polish-speaking Medininkai borderland area is famous for a Romanesque 14th-century castle with a small-but-modern tower museum, the Soviet-led Medininkai massacre of 1991 and Aukštojas hill, its 293,84 m making it the highest location in otherwise flat Lithuania. 30 km east of Vilnius. A far call from Trakai island setting the out-of-the-beaten-path Medininkai castle is preferable for those who hate flocks of tourists.
4.Kernavė Castle Hills are the location of Lithuania's 14th-century capital but its multiple wooden castles and town have since turned to dust, making the location more interesting for nature lovers than cultural buffs. A local museum has a nice archeological collection, however.