Logenhaus, Masonic lodge building in Rotherbaum, Hamburg, Germany

The Logenhaus is a Masonic lodge building on Moorweidenstraße 36 in the Rotherbaum district of Hamburg, Germany. Its facade features rough stone blocks on the lower level and two columns that support a triangular pediment adorned with glass mosaics.

The Logenhaus was built between 1907 and 1909 to designs by M. Gerhardt, Hermann Eduard Schomburgk and H. Leopold Strelow. It has served since then as the Hamburg seat of the Johannislogen and Andreaslogen and of the Ordenskapitel "Inviolabilis", all within the Provinzialloge von Niedersachsen of the GLL FvD. The building also contains the Mozart-Säle, used for concerts, theatre performances and weddings.

The house serves as the seat of the Ordenskapitel "Inviolabilis", the Andreaslogen "Concordia", "Corona vitae" and "Fidelis", and around eighteen Johannislogen including "Am rauhen Stein", "Carl zum Felsen" and "Zum Pelikan". These lodges belong to the Provinzialloge von Niedersachsen within the GLL FvD. The Mozart-Säle in the building host concerts, theatre performances and weddings.

The building sits in the Rotherbaum district, close to green spaces and well served by public transportation. Access to the interior is generally tied to scheduled events, so checking the program in advance is the best way to see the inside.

Seven steps lead up to the entrance hall, where a statue of John the Baptist stands with a cautionary gesture toward those who enter. In Masonic tradition, this figure represents truth and justice, and it is the first thing visitors encounter when crossing the threshold.