The St. Trinitatis church in Wolfenbüttel is one of the most important Baroque churches in Germany.
Where today the church stands, was formerly the emperor gate built by Cort Menge (also Cord Mente) in the years 1570 to 1578. With a floor space of 34 × 26 meters, it was a large building with two floors. After the Thirty Years' War (1618-48), the Emperor's Gate had become militarily useless, so the upper floor was used as a prayer room from 1655 as a place of worship - as a temporary solution and replacement for one built from 1588 to 1589 and in the course of the expansion of the city fortification 1655 demolished half-timbered church. The prayer room offered 350 seats for the service, the ground floor was still used by the garrison.
For the growing community, however, this solution became increasingly too small, so that about 1692, a new church was planned, first as a magnificent stone. After several attempts, the church built by master builder Hermann Korb was finally consecrated in 1700 - today known as "St. Trinitatis I "denotes. For cost reasons, and because Hermann Korb came from carpentry, the church was built of wood.
Five years later, in 1705, "Trinitatis I" was destroyed by fire after a lightning strike. Until the reconstruction from 1716, the services were held in the Gießhaus on the Philippsberg. Herrmann Korb was commissioned with the construction of the present church, "Trinitatis II". Also for this church survived components of the Kaisertor were reused for cost reasons. For the same reasons, only the outer walls were built of stone, but inside was built with wood; The pillars consist of four clasped and interconnected fir trunks, the vault of laths and plaster. In 1719, the church was finally consecrated for the worship service, but completed in detail in 1757. The original colorful painting of the interior has not been preserved.