Perhaps this was caused by the broad roof, or possibly the building's plain front.

Above the square room was a broad roof, the size of the room itself.

But no; they floated gently down upon a broad, flat roof, and came to a stop at last.

On the broad roofs, they saw hundreds of people coming out to watch them as they moved across the city.

The broad roof was flat, but she could not see easily to every parapet.

On the broad roof were white strips of some material, making a huge V followed by two I's.

Randi studied the long, broad roof behind them as she bandaged.

He followed it onto the broad wooden roof, delirious with relief to have the sky and the stars over him.

But the building had a broad, flat roof, a fact which brought a soft laugh from The Shadow.

The roof, broad and low, was set at a slight slant.