Boat. If you're near a river, lake or the ocean, you could charter a riverboat, cruise liner or tall ship for the evening. Prom venues don't always have to be stationary!
Music Venue. Have the DJ or band set up on the stage and use the general admission area as the dance floor. Check the theater's capacity to make sure all your guests will be able to attend.
Dance Club. Even if the club is normally for 18 or 21-and-over, the owners might be into letting your class rent the space for the evening. There should already be a killer sound system, lights and a DJ booth, making this an easy prom venue.
Aquarium. Surrounded by huge tanks of exotic fish, your class will definitely feel like they've been transported to another time and place.
Outdoor Pavilion. A covered pavilion at a park or the beach can make for an enchanted evening, just make sure you live in a place where the weather isn't unpredictable. Outdoor prom venues can be risky if you live in a rainy area!
Convention Hall. You might picture concrete and big, empty rooms at the mention of a convention hall, but these spaces are the ultimate blank canvas. If you need the space and are all about decorating, consider it.
Historic Landmark or Castle. Pick a scenic and historic location to create a historic evening. Depending on the location, you may only be allowed to decorate minimally.
Museum. Revel at the priceless artifacts and sculptures around you while admiring the beauty in your date.
Botanical Garden. Surrounded by lush greenery and blooming flowers, you won't even need outside decorations. Plus, the air will be sweet and naturally perfumed
Farm. As long as you stay clear of animal stalls, farms with gigantic barns could make pretty memorable prom venues. Throw in a gorgeous landscape backdrop and you've got an ideal photo location, too.
Hotel. No, not Motel 6… think an upscale hotel with a large ballroom and fancy décor that will compliment your formal attire.
Restaurant. Restaurants with large spaces can be great prom venues, especially if your event will include dinner.
On the prom committee? Check out the ultimate resource Prom Planning: A Guide