Examples:
A snow slide. Only available in Winter, of course.
A Blooming Flower park. Only available in Summer or Spring.
Some special beach Specializations. For example a Water Park, Aquarium, Resort. May be only available in Summer.
Some limited buildings during wonderful events, like:
A giant Christmas tree, only available in December 10-27. (Christmas Day)
A horror attraction, only available at Halloween
Some Firework display, only available before New Year.
