One hundred years never looked so beautiful as the festivities begin with a ribbon-cutting ceremony on Friday morning. Stroll through the Centennial garden and see a variety of blooms in vibrant colors. As the weekend continues enjoy strolling musicians, gardener talks and a trivia contest. Couples are invited to recommit during a vow renewal ceremony on Saturday at noon. The first 100 visitors each day receive a commemorative 100-year magnet. (9:30 a.m.-9:30 p.m. today; 10 a.m.-4 p.m. Sat.-Sun. Free. Marjorie McNeely Conservatory, 1225 Estabrook Dr., St. Paul. 651-487-8200.



A nighttime arts festival and bike ride along the Midtown Greenway. The illuminated trail will feature a variety of sculptures as well as live music. Join the dance party in the parking lot of Kix Field and make ceramic art at the Soo Line Community Garden. The event is free, but registered riders receive free food, beverages, glow lights and other perks. (6 p.m.-midnight Sat. Free, $30-$70 for registered riders. Midtown Greenway, Mpls.