Known as the capital of Samogitia the Telšiai town (pop. 30 000) hugging the coasts of Mastis lake is interesting for its wooden downtown, relatively authentic main street and main square.
Telšiai is the center of the Roman Catholic Telšiai diocese since year 1840. The classicist Telšiai Cathedral (1794) is the only two-floored church in Lithuania. Next to the Cathedral stands the 4-story diocesan priest seminary established in a former monastery.
The Telšiai Alka museum that was established in the interwar period is among the best of Lithuania’s museums. It represents art from the Samogitian manors, Samogitian clothes, church art and other things about Samogitia. Most of what is shown is of good quality an the museum is well worth a visit.
Derelict industrial buildings of 19th century might interest you as well.
Telšiai is a well-kept town. Samogitian dialect is widely used here and some marks and signs are written in it.
5 km to the southeast of Telšiai stands Rainiai village, where a chapel marks the place of the infamous 1941 Rainiai massacre when Soviets brutally tortured and murdered at least 73 Lithuanian civilians.