The second house is the Palace of Gustave Binger .  Gustave Binger was the first governor of the city. His palace was built in 1902. It was located on the Treich-Laplène Boulevard, the principal administrative district in front of the sea. It was composed by a first floor raised with a basement under it. A lot of rumors say that this basement was used for prisoners. On the front, there were stairs to go to the veranda next to the lounge. The walls were filled with little imported lime bricks. We could see the wharf, the garden, and the African Telegraph Company office from wide windows with blinds. In this first picture you can see the palace in 1902. 

 And in this second picture, you can see the actual state of the palace. 

  NB: It's incredible because i took this last picture a long time before to begin research on this subject.  And here you have an another view of the palace in 1990.