The antonyms for the word "camping grounds" would be places where people can stay comfortably indoors, like hotels, motels, and resorts. These locations offer amenities such as air conditioning, heating, and room service, and guests can enjoy their stay without worrying about the elements or insects. Other antonyms for camping grounds could include urban areas, such as cities, or coastal areas with beachfront properties. Some people prefer the luxuries of modern civilization and aren't interested in roughing it outdoors, so they may opt for an antonym of camping grounds instead.