Near the market, two tenements of the 18th century house the Museum of Clocks founded and run by the Przypkowski family. It has a rich and varied collection of hundreds of sundials, gnomon instruments, various instruments for measuring time: hourglass, fire and mechanical clocks and astronomical instruments.
It is recognized as the third such collection in the world after Oxford and Chicago. The section of old books includes about 600 volumes, of which the most valuable is the work of Copernicus from 1566, "Derevolutionimbus Orbium Coelestium" and autographed copies of Hevelius, Descartes and Huygens. A notable addition is the collection of prints and bookplates of about 25,000 works created from the 16th to the 20th century and preserved interior of the Przypkowski house filled with art collections.