The Umbrella by Ingrid and Dieter Schubert
This wordless picture book is pure delight from the inside front cover to the inside back cover. A small black dog and a red umbrella travel around the world, from the savannas of Africa to the depths of the ocean. Excitement, adventure, and brilliant colors. Each two page spread is full of interesting characters to discover.
I don't know who was more delighted: the five year old, the seven year old, or me.