The Blue Mosque - Exterior

The mosque is normally seen from the park area separating it from the Aya Sofiya as in the first photo. However, to get a historical perspective, you can walk over to the road named the Kennedy Caddesi along the shore of the Sea of Marmara. From this vantage point you can see the mosque with the ancient Byzantine walls in the foreground. Note that more recent buildings have incorporated parts of the 2,000-3,000 year old wall sections into their own structures.
By the way, Sunday walks for large family groups along the shoreline paths is a tradition in Istanbul.