Congress Avenue Bridge shelters the largest urban bat colony in North America. More than 1.5 million bats fly out near dusk. April-Oct.

Come explore, learn and play! Enjoy seven themed, hands-on exhibit areas designed for children ages 0-11 and their families. Tues.-Sat., 10am-5pm; Sun., noon-5pm.

A fun, narrated, amphibious tour of downtown Austin end with a splash on Lake Austin. Tours and tickets available at Austin Visitor Center.

Features organic produce, flowers, baked goods, meats, cheeses, packaged foods and crafts, along with live music. Sat. 9am-1pm at Republic Square Park; Wed. 4-8pm at The Triangle, between Lamar and Guadalupe Sts.

Research library documents Austin and Travis County through newspaper archives, photographs and other historical materials from 1839.

Presents and organizes contemporary exhibitions of work by international, national and local artists. Tues., Wed., Fri., Sat., 10am-6pm; Thurs., 10am-8pm; Sun., noon-5pm.

Facility features beautifully landscaped grounds and historic villa on Lake Austin. Villa open daily, 11am- 4pm; grounds open Mon.-Sat. 9a.m. - 5p.m.; Sun. 11am-5p.m.

Enjoy 22 acres of fun-filled attractions, special event areas, game pavilion, go-karts, bumper boats, mini golf, rock climbing wall, kiddie rides, laser tag and batting cages.

Every Saturday from 9:30 a.m.-1 p.m., the market offers produce, organic coffee, baked goods, handmade jewelry, stained glass, sculpture, soap, flowers, soy candles, plants and more.