across from – prep. on the opposite side from (someone or something) 

behind - prep. in or to a place at the back of or to the rear of (someone or something) 

elevator – n. a machine used for carrying people and things to different levels in a building 

every – adj. used to describe how often some repeated activity or event happens or is done 

gym – n. a room or building that has equipment for sports activities or exercise 

lobby – n. a large open area inside and near the entrance of a public building (such as a hotel or theater) 

lounge – n. a room with comfortable furniture for relaxing 

mailroom – n a room in which mail is processed and sorted

next to – prep. at the side of (someone or something)  

parking garage – n. a building in which people usually pay to park their cars, trucks, etc. 

rooftop – n. the cover or top of a building or vehicle 

work out – phrasal verb. to perform athletic exercises in order to improve your health or physical fitness