This is intended as a hidden doorway, but it's a reasonable way to design closet doors. That's because you're not expecting furniture to be placed in front a closet door. So, adding shelving makes use of that otherwise dead space.
For a family with dogs, the designer of this contemporary kitchen incorporated three distinct pet-feeding stations throughout the space. A glass and mahogany door, which perfectly complements the kitchen’s sleek style, slides out to separate the pups.