Great rooms are where everything happens. Instead of a formal living room and family room, as in the past, most of today's house plans feature a great room that opens to the kitchen. You'll often find a grand fireplace here. Many house plans with great rooms feature vaulted ceilings for an airy, voluminous feeling that makes even a modest home feel bigger. And don't forget the dining rooms: many of today's hottest homes do away with formal dining rooms in favor of large, open eating centers near the kitchen (like a breakfast nook but bigger). A great room may be labeled as a living room, but if it's big and open, it's a great room in our book.