1. In back of means located behind.
Pattern 1: noun + in back of + noun
There is a beautiful tree in back of our house.
Pattern 2: verb + in back of + noun
Your sister sits in back of me in class.
Best Tourist Spots in the World
Musee du Louvre Paris France
This is the most visited art museum in the world. The recently launched Islamic art exhibition complements an already marvellous collection of masterpieces that will astonish art lovers.