Asmara has a number of villas built before WWII in a variety of deco styles.
Cohan's Villa, according to Lonely Planet, was built in the 1930s for a prominent Jewish trading family.
To me the standout feature is the blue tinted windows that wrap around the corners of the building.
I also like the line in the wall which is set a different levels. I don't know if it was designed this way or if the wall has been leveled at it's current height.
Lonely Planet, Ethiopia, Eritrea & Djibouti ~ Frances Lindsay Gordon, 1st Ed, November 2000