The drugstore at the top of the Champs-Elysees is open until 2am every night for snacks, take-out food, books, assorted gifts, and essentials.
Champs-Elysees has only a washroom and rest area built on top of it. 
mnli hypothesis: Champs-Elysees has only a washroom and rest area built on top of it.  premise: The drugstore at the top of the Champs-Elysees is open until 2am every night for snacks, take-out food, books, assorted gifts, and essentials.