The Alleon House (Casa Alleon) is a historic residence in the old center of Constanța, built between 1882 and 1884 for French banker Jean Gérard Amédée Alleon, a prominent member of the city’s Sephardic Jewish community. Alleon commissioned Greek architect Pelopidas D. Couppa from Constantinople to design the house, which was also once known as the Stone House and the English House.
The massive stone building combines Victorian and Venetian Gothic influences across a semi-basement, mezzanine, upper floor and partial attic. Its two main façades are deliberately different, with simple rectangular windows contrasting with a distinctive Venetian-style corner bay built in exposed brick and decorated with Neo-Gothic details. The design evolved while construction was already underway, with Couppa substantially revising the original 1882 plans the following year.
Alleon House ceased to be a private residence in the early 20th century. The Dacia Română insurance company bought it in 1905 and converted it into offices, while in 1914 it became the seat of the newly established Constanța Court of Appeal. Later uses included administrative offices, accommodation for Soviet officers after the Second World War, housing for port workers and, from the 1970s, a closed hotel operated for railway employees.
