http://www.newsweek.com/fortnite-ghost-decoration-locations-fortnitemares-challenge-guide-1189037

Fortnite ’s Fortnitemares Challenges continue, and the latest asks players to destroy a Ghost Decoration in seven different Named Locations. There are 13 possible ghosts, but we’ll cover enough for you to earn progress toward that sweet Dark Engine Glider.

1) At the golf shop in Lazy Links