Kids
Courtney Silva
With Earth Day just around the corner, Martin Park Nature Center, 5000 W. Memorial, gives families a chance to roll up their sleeves and dig into nature, 10 a.m. to 2 p.m. Saturday at the Martin Park EarthFest.

Features
Courtney Silva
In celebration of this year’s Architecture Week, the American Institute of Architects Central Oklahoma Chapter will host its 10th annual Architectural Tour from noon to 5 p.m. Saturday.

Music
Courtney Silva
Performing for a good cause is something in which Bobby Reed believes. His band, The Guilt Racket, will play along with four other artists in “Rock-a-bye- Baby,” a benefit concert to raise money for the March of Dimes, 7:30 p.m. Saturday at The Conservatory, 8911 N.

OKG7 things to do
Gazette staff
Good evening, and what can I tell you?

OKG7 things to do
Gazette staff
With “Thor” hitting theaters, it must be time for Free Comic Book Day!

OKG7 things to do
Gazette staff
Hats off — er, on — to Remington Park’s sixth annual Kentucky Derby Hat Contest. Don your best, ladies, for a chance to win cash prizes, as the competition and accompanying tea party brim with excitement from 4 to 6 p.m. Saturday on the clubhouse level of the park, 1 Remington Place.

OKG7 things to do
Gazette staff
Get a double dose of Southern rock at 7 p.m. Saturday as legends ZZ Top (of the beards) and Lynyrd Skynyrd (of the bird that is free and that you cannot change) bring their “Rebels and Bandoleros” tour to the OKC Zoo Amphitheatre, 2011 N.E. 50th, with special guest Drake White.

OKG7 things to do
Gazette staff
Join the roller derby ladies of the Oklahoma Victory Dolls for their first bout of the season as they take on Texas’ Alamo City Rollergirls at 7 p.m. Saturday at Miles’ Roll-A-Way Rink, 5800 N.W. 36th.

OKG7 things to do
Gazette staff
Celebrate Asian culture and traditions at the 25th annual Asian Festival, 10 a.m. to 4 p.m. Saturday at the Sheraton Oklahoma City Hotel, 1 N. Broadway.