View of the Salinenkapelle

The spiritual center of the Au was its chapel. The local master mason Wolf König built it in 1630/31 according to the plans of the important Munich master mason Isaak Bader. It was only in 1671, 40 years after its completion, that the salt works chapel – the most important sacred building in the town of Traunstein – was consecrated to Rupert, the saint of salt, and to the patron saint, Duke Maximilian (elector from 1623), the founder of the salt works.
Source:
traunstein.de/tourismus-freizeit/traunsteiner-wandern/salinenkapelle-st-rupert-und-maximilian

Salt chapel of St. Rupert and Maximilian
The Au's spiritual center was its chapel. The local master mason Wolf König built it in 1630/31 according to the plans of the important Munich master mason Isaak Bader. It was not until 1671, 40 years after its completion, that the salt chapel - the most important sacred building in the city of Traunstein - was consecrated to the salt saint Rupert and its namesake, Duke Maximilian (elector from 1623), the founder of the salt works.Source: traunstein.de/tourismus-freizeit/traunsteiner-wandern/salinenkapelle-st-rupert-und-maximilian

The chapel of the Saline Traunstein St. Rupert and St. Maximilian (also Aukirche) is a Roman Catholic chapel on Karl-Theodor-Platz in der Au in Traunstein. It was built in 1630/31 by the master mason "Wolf" (Wolfgang) König, who lived in Traunstein, according to the plans of the master mason Isaak Bader. The chapel combines central and longitudinal space, tower and dome, Renaissance and Gothic forms according to author Joseph Liegl (1984), each unique. The Seeon Monastery and Elector Maximilian I commissioned the building. The local master mason Wolf König built the chapel, and the plans were drawn up by the master mason, Isaak Bader. In 1671 the chapel built forty years earlier was consecrated. It bears the double patronage of the bishops Rupert of Salzburg and Maximilian of Celeia, who are revered as saints.Source: de.wikipedia.org/wiki/St._Rupert_und_St._Maximilian