Moderne Deco buildings look like Deco objects such as clocks, writ large. They have rounded corners, and aim for a streamlined effect. The corners are cylinders that abruptly transition to planar walls. Glass brick windows are frequent. So are large window areas made up of regularly repeated units of smaller rectangular windows.
Tiled facades are common.
So are horizontal bands of jutting material, which also add to the nautical look. Vertical bands are common as well. There are often towers, sometimes using small spheres as part of their construction. Color is often brilliant in these buildings. Waterfall effects sometimes flow down the fronts of Moderne Deco works.