Another quaint town is Bärenstein - located on a hill above the Müglitz valley at an elevation of about 500 m. It was first mentioned in 1294, the castle of the same name a little late in 1324. Unfortunately the castle is privately owned and not open to the public, but it is still an impressive sight, dominating the valley.
You might have more luck seeing the interior of the church. It was reconstructed in Baroque style 1738-40 using the structures from 1495 (especially choir). The patronage box from 1741 is very nice. The beautiful organ, font and pulpit date back to the reconstruction, the altar is younger (end 19th century) but fits well.
Look around the market square with distance column, town hall from 1604 and the townhouses built in the 18th and early 19th century.
While in Frauenstein to see the ruins of the castle you might want to explore the quaint town itself a bit. The market square is nice - surrounded by townhouses of the 19th century, the ev.-Lutheran church (1871-73) in the centre. A fire in 1869 has not left much of older architecture.
There are still some things to see: The so called "Neues Schloss", built in the 16th century and nowadays used for offices, meetings, apartments. On the ground floor there is a small museum on the most famous citizen of Frauenstein: Gottfried Silbermann, the Baroque organ builder, who was born in nearby Kleinbobritzsch (house where he was born preserved).
See the distance column on market square as well, stroll along the side alleys, watch everyday life and maybe have a coffee and a piece of pastry in a cafe/bakery.