Moller-Haus, Cultural heritage monument in Darmstadt, Germany.

The Moller-Haus is a listed neoclassical assembly building at Sandstraße 10 in Darmstadt, designed by Georg Moller and inaugurated in 1818 for the Masonic lodge Johannes der Evangelist zur Eintracht. Its T-shaped plan combined a windowless rear hall, the Logensaal, with a transverse front block holding an antechamber, conference room and social room behind a portico and open staircase. Two sphinxes by Philipp Johann Scholl flank the steps since 1826.

Grand Duke Ludewig I gave a plot at Sandstraße 10 for the Masonic lodge Johannes der Evangelist zur Eintracht, founded in 1816. Architect Georg Moller designed the Neoclassical assembly house, inaugurated in 1818. The Nazis banned the lodge in 1933, and a 1944 air raid nearly destroyed the building. Only the portico with six Ionic columns and two sphinxes survived; a new building by Rolf Romero and Lothar Willius rose on the site from 1962 to 1966.

The house was built for the Masonic lodge Johannes der Evangelist zur Eintracht, founded in 1816; Grand Duke Ludewig I, who had joined the Masons in Moscow in 1774, was a founding member. Today the lodge shares the building with the Freie Szene Darmstadt e.V., which has used the Theater Moller-Haus as a rehearsal and performance venue since late 1998. Three Darmstadt lodges also meet here.

The house is located centrally in Darmstadt and can be reached by tram and bus. From several stops nearby, you can easily explore the area on foot.

The 1962-66 rebuild by Rolf Romero and Lothar Willius reused only the portico with its six stone Ionic columns and the two sphinxes carved by Philipp Johann Scholl in 1826, which flank the outdoor staircase. Everything else dates from the post-war reconstruction.