Here's what is happening during the history museum's opening weekend. To celebrate, admission to all four state museums in Santa Fe is free Saturday, Sunday and Monday (May 23-25). For more information, visit www.museumfoundation.org/museumweekend or call 982-6366. The New Mexico History Museum 113 Lincoln Ave., behind the Palace of the Governors Saturday, May 23 Grand opening gala, 6:30-9 p.m., $200. Historian David McCullough is honorary chair of this evening's events. Guests are encouraged to don period New Mexico clothing for their night of fun. Gala Tickets Purchase tickets at the Lensic Box Office at 505-988-1234 or www.ticketssantafe.org Info Heather Wood, at email@example.com or 982-6366 ext. 116 Sunday, May 24 Members-only preview, 9 a.m.-noon, free. Members will be first to enter the museum on its grand opening Sunday. The beautiful new Spiegelberg Shop featuring hundreds of works by New Mexico artists, opens at 10 a.m. Memberships available at the door or at www.museumfoundation.org. Info Mariann Lovato, Mariann@museumfoundation.org or 982-6366, ext. 117. Sunday, May 24 Public opening, noon-6 p.m., free. Opening features free museum admission; appearances by special dignitaries; a ribbon cutting; live music; readings and booksignings with area historians; the public opening of the Spiegelberg Shop, featuring hundreds of works by New Mexico artists; and more. Schedule Noon-1 p.m. Live music outside the museum, Native drumming in the Palace Courtyard Noon Grand opening of the Spiegelberg Shop 1-3 p.m. Ribbon-cutting with dignitaries 3-4 p.m. Santa Fe Indian School Spoken Word team performance on the Plaza 3-5:30 p.m. Book signings in the history museum gathering space 3-6 p.m. Procession of lowriders and display outside the Palace 4-4:30 p.m. Kenpo Po Karate School demonstrations on the Plaza 4:30-5 p.m. Mariachi de Sonidos del Monte on the Plaza 5-6 p.m. Institute for Spanish Arts and Maria Benítez's La Generación performs on the Plaza. 6-6:30 p.m. Order of the Thistle pipes and drums on the Plaza. Monday, May 25 Family day, 10 a.m.-5 p.m., free. Los Compadres, the History Museum's friends group, hosts this daylong opening with activities in the museum and on the Plaza. Schedule 10 a.m.-5 p.m. Free admission to the museum 10 a.m. Interfaith service at the Cathedral Basilica of St. Francis of Assisi. 11 a.m. Procession to the museum, with Los Caballeros de Vargas, the Santa Fe Fiesta Council, representatives of Native groups and New Mexico Historical societies and others 11:30 a.m. Lion Dancers from the Chinese American Citizens Alliance of New Mexico perform outside the museum. Noon-4 p.m. The Santa Fe Vintage Car Club displays shining examples of the cars that once carried Americans across the Southwest. On the Plaza. Noon-5 p.m. Live music, dance, artists, lowriders, readings and booksignings, Chautauqua performers, and more (museum and Plaza). Throughout the Plaza, characters from the past, dressed in period costumes, will appear and tell their stories. 1-2:30 p.m. Members of La Sociedad Folklorica join representatives of New Mexico's tribes and Pueblos to model historical clothing, complementing the museum's premiere rotating exhibit, Fashioning New Mexico. In the museum's upstairs gathering space. 1-4 p.m. Route 66 Ice Cream Parlor offers ice-cream social with live music and historical photo boards. Team Silva (professional cage-fighter Paul Silva and his father/mentor/cornerman Gilbert H. Silva are among the scoopers). In the Palace Courtyard. 2:30 p.m. Telling New Mexico, the book accompanying the museum's core exhibit will be unveiled at a book signing and panel discussion among contributing authors. In the museum's brand-new auditorium.