Train, theatrical American Idol star Adam Lambert, Neon Trees, Mat Kearney, and Hanson join others in an outdoor festival

Six fields spread across 89 acres with scenario-style play including a castle and towers, and tournament-style action, such as speedball

Ryan Bingham, Hayes Carll, and more than 25 other country acts crank out hits and sentimental ballads across three stages

Public-skate sessions take place on NHL-size ice rink inside The Parks at Arlington

Experienced captains instill proper seamanship & teach beginners fundamental sailing skills in lessons on Lake Michigan

In local restaurants, artist guides students equipped with all supplies through painting Picasso & Monet works, trees & figures

After 30-minute ground briefing, skydivers ascend to at least 10,000 ft. & jump while strapped to pros, reaching speeds of up to 120 mph

Inflatable bounce houses, slides, and obstacle courses; adults can bounce along with their kids

Kids' music from They Might Be Giants soundtracks swirling science vignettes; themed shows explore Pink Floyd and The Beatles

During tandem jumps, instructors fasten themselves to passengers and control each descent while riders can help steer and land