Morris Arboretum will offer the grand opening of the Garden Railway Display on Saturday, highlighting a Victorian theme.

This year's theme will be "Painted Ladies," allowing visitors to see versions of Victorian homes from cities across the nation - including the colorful examples that have become famous in San Francisco. Arboretum volunteers dressed in Victorian garb will dispense interesting facts about the time period. Festivities, beginning at 1 p.m., will include craft activities and ice cream for kids, while it lasts.

The Garden Railway, which has a changing theme each year, is a miniature world set in a summer garden, featuring historic buildings created with natural materials. The grand opening will be from 1 to 3 p.m. and it is free with regular admission.

Garden Railway Display opening Saturday and continuing through Sept. 5 at Morris Arboretum of the University of Pennsylvania, 100 E. Northwestern Ave. Hours: 10 a.m. to 4 p.m. weekdays, 10 a.m. to 5 p.m. weekends. Admission: $16, $7 for children ages 3 to 17 and students (must have ID), $14 for seniors 65 and older, $7 for visitors who enter the arboretum without a vehicle, free for members and children under 3. Exhibit is free with regular admission. Information: 215-247-5777 or www.morrisarboretum.org

Memorial Day at Constitution Center

The National Constitution Center will host a Memorial Day weekend celebration Saturday through Monday, allowing families to participate in free activities that teach the history of the holiday.

During the festivities, children can hear how poppies came to be the symbol of Memorial Day following World War I. From 10 a.m. to 3 p.m., there will be craft activity tables and families can create memorial poppy pins and American star memorial wreaths. The center will sponsor "Patriotic Karaoke," when visitors can sing American anthems.

Each morning through Memorial Day there will be an American flag-raising ceremony, and proper flag-raising procedures will be taught. Visitors can also learn about the history of monuments throughout the country in the 20-minute, interactive program "Memorials: How a Nation Remembers" at 10 a.m., noon, and 2 p.m. On Sunday, karaoke and craft activities will take place from noon to 3.

The center's core exhibit, "The Story of We the People," continues during the weekend celebration.

Memorial Day Weekend Celebration, 10 a.m. to 3 p.m. Saturday and Monday at the National Constitution Center, 525 Arch St., Independence Mall. Sunday activities take place from noon to 3 p.m. Hours of operation are 9:30 a.m. to 5 p.m. weekdays, 9:30 a.m. to 6 p.m. Saturdays, noon to 5 p.m. Sundays. Admission: $12, $11 for ages 65 and older, $8 for ages 4-12, free for active military with ID, members, and ages 3 and younger. Programming times vary daily; check the visitor guide upon arrival. Information: 215-409-6600 or www.constitutioncenter.org.

Memorial Day at Children's Museum

Delaware Children's Museum offers storytelling, crafts, and more activities from Saturday through Memorial Day.

From 10 a.m. to 3 p.m., kids can have fun decorating patriotic windsocks and taking part in other arts activities. Children can hear fun stories about summer from 11 a.m. to 12:30 p.m. From 1 until 3:30 kids can play beach volleyball and other games in "Surfin' USA" while listening to summer music.

Memorial Day Weekend at Delaware Children's Museum, 9 a.m. to 4:30 p.m. Saturday through Monday at the Delaware Children's Museum, 550 Justison St., Wilmington. The museum is open from 9 a.m. to 4:30 p.m. daily. Admission: $12, free for ages 12 months and younger and members. Information: 302-654-2340 or www.delawarechildrensmuseum.org.

Contact Monica Peters at mpeters@phillynews.com.