The Skyway. One, a fun break and great views of the park. Two, when the park was really crowded, an easy way to get from one end to the other. Especially with a family, you didn't have to hold hands and drag your crew through the crowd.
A related thread - possibly already here - is what attraction is still there that should NOT have been allowed to descend into horribleness? The answer there is the Jungle Cruise. Should have been revamped/updated decades ago. It can still be fun, and charming, but as an attraction it's 30 years past needing a massive makeover.