Monthly educational kits spark kids' scientific curiosity with colorful lesson manuals & hands-on experiments designed by scientists

Guides lead hikers through picturesque dessert valley en route to rappelling cliffs & 1,000 ft. zipline, providing lunch & transportation

10-hour trip explores nearly 200 miles of majestic landscape with narration by certified captain & provided breakfast & lunch at lodges

Helicopter passengers fly over harbors & downtown in daylight, coast past lights at night, or toast sunsets with champagne at dusk

13 themed paintball fields with mountainous terrain, obstacles & labyrinthine trenches host skirmishes between fully equipped players

Biplane soars up 2,000 feet, giving panoramic views during self-styled tours of Nashville's downtown, historic landmarks & Cumberland River

Eco-conscious zoo permanently shelters more than 40 nonreleasable animals on 122 acres replete with 30 exhibits linked by 2 miles of trails

Annual auto show celebrates 98th year with lineup of 450 vehicles & 2012 models collected from global manufacturers including Audi & Lexus

Monthly educational kits spark kids' scientific curiosity with colorful lesson manuals & hands-on experiments designed by scientists

Interactive indoor walking tour garnered praise from Chicago Reader readers for its two-hour tours of architectural landmarks