1. After his customary afternoon rest had been taken, David walked on the flat roof of his palace. In the cool of the evening the roofs of the houses are occupied by family groups who go there for air and exercise. In Daniel 4:2929At the end of twelve months he walked in the palace of the kingdom of Babylon. (Daniel 4:29) we have an account of the walk of another king. Instead of walked in the palace, the marginal reading is, upon the palace. It was on the roof that Nebuchadnezzar walked, and from there he obtained that view of his great city which lilted his heart with pride and made him forget God.
2. The bath in which Bathsheba was washing was in the courtyard, secluded from all ordinary observation, but yet visible from the palace roof.