St. Thomas' Church in Strasbourg is a significant example of Alsatian Gothic architecture. Architecturally, St. Thomas' Church is notable for being the only example of a hall church in the Alsace region. This design features a five-naved hall, providing a spacious interior well-suited for congregational gatherings and preaching. The church is often referred to as the "Protestant Cathedral" due to its importance in the region.
Completed in 1521, it has served as the main Lutheran church in the city since the Strasbourg Cathedral became Catholic again after 1681. Inside, visitors can admire the impressive mausoleum of Marshal Maurice de Saxe, a masterpiece of 18th-century French funerary art created by sculptor Jean-Baptiste Pigalle. The church also houses a historic organ that was played by Wolfgang Amadeus Mozart during his visit to Strasbourg in 1778. Guided tours are available in French and German upon prior request.