marquee

a large tent used for eating and drinking in at events held mainly outside that involve a lot of people:

Examples:

a roof-like structure that sticks out over the entrance to a public building, especially a theatre, and on which there is usually a sign

being the main performer or sports person in a show, film, sports event, etc. or being the performer, etc. whose name will attract most people to the show, film, etc.:

Examples:

a covered entrance to a theater with a sign that shows the names of the movies or play that you can see