Walk-in closets are often have another room attached to a bedroom or bathroom, a walk-through closet is a combination of a hallway and a closet. This type of space is normally found between a master bedroom and a master bath, or between two kids' rooms. Walk-throughs can be in a variety of sizes and footprints.In order to decide what's best for your home, you need to understand what these storage options both offer and require. Walk-in closets consist of an open space that already exists, while a wardrobe creates a storage space that can be placed in the room.