The Munich-based architect Johann Baptist Schott delivered the plans for the 1893/94 built by Byzantine-inspired neo-Romanesque church. The east tower carries a folding roof and triangular pediment. Arched moldings, arched windows and arched portals date from that just in the last quarter of the 19th century, very popular in Germany historic style. In medieval dark interior receives a three-aisled basilica with a wide nave and narrow aisles, kreuzgratgewölbt. The pilasters Longhouse is vierjochig, the collected choir concludes with an apse. 
Interior Features: 
For the interior bulkhead won the Munich painter Franz Hofstaetter, Eugen Hasenfratz from Zurich and the Passau sculptor Franz Kruis worked with. The image program designed by the then Expositus Johann Baptist Wolfsgruber. This series of paintings that fills all wall surfaces completely and fully, is probably unique in Germany in its kind. It is a Neo-Romanesque-neo-Byzantine imagery with an almost unimaginable range of topics and individual designs. During his six-year tenure (1895-1901) developed Hofstaetter not only the historical style forms, but also related elements of Art Nouveau. 
The paintings revolve programmatically to the saving message of God to the road to redemption of mankind through the Beatitudes of Jesus and the works of mercy and the Holy as the earthly role models in this way. The high altar as a reliquary with rich gem imitations made of glass, a larger than life Christ as an attachment figure, a large circular chandelier with twelve towers of the heavenly Jerusalem, and stained glass windows with rich color complete the fascinating Romanesque Revival overall character of this unique religious building. Model for the whole painting of the parish church of the Sacred Heart were Romanesque churches through pictures told the believers, then mostly illiterate, the stories of the Bible. 
Hofstaetter used in his work the secco technique; that is, he broke color into milk of lime and painted with this mixture on dry ground. This results in a restoration of the church would be very difficult and expensive.

source: http://regiowiki.pnp.de/index.php/Herz-Jesu-Kirche_(Ludwigsthal)