UPDATE: The ferris wheel and gigantic slide will run from noon until 3 pm on 5th Avenue between Broadway and Toole.

CENTENNIAL BIKE RIDE
9am: Celebrate the Centennial with a 1.5 hour bike ride, discovering Sonoran Desert street trees. Learn to identify different low water native trees in the Downtown streetscape, planted by volunteers, neighborhoods, the City of Tucson and the Downtown Tucson Partnership as part of the 1,000 Trees Please campaign. This easy bike ride through downtown and neighborhoods meets at the SE corner of Broadway Blvd. and Scott Ave. For more information and to volunteer, email diana.Rhoades@tucsonaz.gov or 837-4263.

INDOOR EVENTS

Fox Theatre 17 W. Congress St.
1pm: Fox Theatre, Tu Nidito and Christina Taylor Green Foundation present children’s concert with Secret Agent 23 Skidoo, one of the most popular children’s music acts in the US, with the number 2 children’s album of 2011.

Scottish Rite Cathedral 160 S. Scott Ave.
2pm-4:30pm: ACLU presents Arizona Civil Rights Memories, a panel discussion moderated by former Tucson mayor George Miller, with retired Arizona Supreme Court Justice Stanley Feldman, retired UA Law School Dean, Professor Emeritus Charles Ares on the panel.

Manning House 450 W. Paseo Redondo
2pm-6pm: Los Descendientes del Presidio de Tucson presents an Arizona Centennial Tardeada, an afternoon party with live music and dancing!

Tucson Symphony Orchestra Tucson Music Hall, 260 S. Church Ave.
2pm: Tucson Symphony Orchestra’s Arizona Centennial Celebration, conducted by George Hanson. Featuring R. Carlos Nakai, Native American Flutist, performing a newly-commissioned piece, followed by the orchestra’s performance of the “Grand Canyon Suite” accompanied by stunning new images of the Grand Canyon created by famed “photochoreographer” James Westwater. (Tickets: $30-$86)

The Screening Room 127 E. Congress St.
2pm: Screening of “Lost River: Lincoln’s Secret Weapon” the true story of Anna Ella Carroll, a woman military strategist and adviser to President Abraham Lincoln during the Civil War. (Tickets: $7)