Sternenfels has a long industrial history. The local quarries were used to produce masonry and "stubensand", an early
abrasive which was very popular for household cleaning in the 18th and 19th centuries. The town castle, built by the von Kürnbach family and later used by the von Sternenfels, was completely demolished and used to produce stubensand by 1778. In 1866 an observation tower was built and triggered local tourism. The site of the castle is still visible in the center of the village. The 14 m high
Water tower on the former castle hill was built during 1967 as part of the Lake of Constance Water supply system and styled as a
keep. The tower is open for the public and allows an excellent view both over
Kraichgau and
Stromberg. It includes as well an historic exhibition about the local nobility and geology. The
Late Triassic Stuben
Sandstone formation (German:
Stubensandstein, the source of Stubensand) around Sternenfels contains as well small amounts of
gold.
Christopher Bechtler—a citizen and jeweler of
Pforzheim—
demonstrated a gold
sluice, he had invented. The two-day trial caused major public attraction since Bechtler invited the farmers to have huge amount of
stubensand washed. Bechtler was not very successful in Sternenfels but later became a millionaire in the United States provided over hundred work places but closed down 1995. The site was converted in an innovation center allowing small companies sharing basic facilities and as well teleworking work places. ==Local politics==