户外广告可能是现存最早的广告形式之一。最早期的户外广告形式,通常是在房屋外墙壁上的显眼处,贴上一些抢眼的标志。考古学者在古代罗马和庞贝古城的废墟中发现了不少这样的标记——有一个从古罗马遗址挖掘出的户外广告显示一家房产要出租;还有一处在庞贝的墙上．是招徕到这里来的旅行家的。 Outdoor advertising may be one of the earliest surviving forms of advertising. The earliest form of outdoor advertising, usually in the house wall in the conspicuous place, paste some eye-catching signs. Archeologists have found quite a few such signs in the ruins of ancient Rome and the ancient city of Pompeii - there is an outdoor advertisement excavated from ancient Roman ruins showing a property for rent; and one on the wall of Pompeii. It’s a traveler who is coming here.