Elmwood Park Zoo 1661 Harding Blvd., Norristown; 610-277-3825. www.elmwoodparkzoo.org. The Norristown Zoological Society operates the Zoo, an educational adventure in a fun, clean & family-oriented environment. $10.75; $7.75 seniors & children 2-11; free for children under 2. Daily 10 am-5 pm.

Fonthill Museum E. Court St., Doylestown; 215-348-9461. www.fonthillmuseum.org. Fonthill's Old-Fashioned 4th of July Celebration - Old-fashioned 4th of July celebration. Bike parade, old-style baseball, watermelon-eating contest, games & more. $4; $1 children 5-17; free for children 4 & under. 7/4 noon-5 pm. $9.50; $8.50 seniors; $4 ages 5-17; free for children under 5. Mon.-Sat. 10 am-5 pm, Sun. noon-5 pm. Reservations recommended.

*FREE* Glencairn Museum 1001 Cathedral Rd., Bryn Athyn; 267-502-2993. www.glencairnmuseum.org. Saturday Highlights Tour - Tour exhibits & collections focusing on religion & its history. Sat. 11 am-1 pm. Painting With Light - Exhibition on the artists & craftspeople who created Bryn Athyn Cathedral & Glencairn's stained glass. Closes 7/25. $7; $6 seniors; $4 students; free for children 5 & under. Sat. 11 am-2:30 pm. Mon.-Fri. by appt. only.

The Historic Grange Estate 143 Myrtle Ave., Havertown; 610-446-4958. www.thegrangeestate.org. Original Penn land grant settled by Welshman Henry Lewis in 1682. Mansion established in 1700 & updated until its present 1850 conception in the English Gothic Revival style. Visited by Washington & other notables of the day. Grounds: dawn to dusk. Mansion: Sat. & Sun. 1-4 pm.

*FREE* Hopewell Furnace 2 Mark Bird Ln., Elverson; 610-582-8773. www.nps.gov/hofu. $4; free for children under 16. Wed.-Sun. 9 am-5 pm. Grounds open daily.

Longwood Gardens Rte. 1, Kennett Square; 610-388-1000. www.longwoodgardens.org. Fireworks & Fountains - Fireworks & colored fountain show set to music. $34; $18 children 15 & under. 7/4 9:15 pm. David Rogers: The Flower Force - Large sculptures of beehives, butterflies, flowers & similar, created with natural materials. Closes 9/6. The Buds & the Bees: Pollination & the Secret Lives of Plants - Explores the sights, sounds & science of pollination. Closes 1/10. $16; $14 seniors (ages 62 & over); $6 students (5-22); free for children 4 & under. Mon.-Wed. & Sun. 9 am-6 pm; Thu.-Sat. 9 am-10 pm.

The Mercer Museum 84 S. Pine St., Doylestown; 215-345-0210. www.mercermuseum.org. Everyday Rhythms - Exhibit on instruments & their histories. Includes interactive displays. Closes 8/31. $9; $8 seniors; $4 children 5-17; free for children under 5. Mon.-Sat. 10 am-5 pm; Tue. till 9 pm; Sun. noon-5 pm.

Morgan Log House 850 Weikel Rd., Towamencin; 215-368-2480. www.morganloghouse.org. Listed on National Registry of Historic Places. Antique furniture, metals, household implements, decorative arts, gardens. $3; $2 seniors & children 6-17; free for children under 6.

Pearl S. Buck House 520 Dublin Rd., Perkasie; 215-249-0100. www.psbi.org. The Art & Sculpture of Green Hills Farm - Selections from Pearl S. Buck's personal collection of art w/ a display of the recently recovered 'The Good Earth' manuscript. Closes 11/15. Tue.-Sat. 11 am, 1 & 2 pm; Sun. 1 & 2 pm. $7; $6 seniors; free for children under 6.

Pennsbury Manor 400 Pennsbury Memorial Rd., Morrisville; 215-946-0400. www.pennsburymanor.org. Recreated country home of William Penn. Provides a peaceful contrast to the hurry of modern American life. Guided tour: $5; $4.50 seniors; $3 children 6-17; free for children 5 & under. Tue.-Sat. 9 am-5 pm; Sun. noon-5 pm.

*FREE* Pennypacker Mills 5 Haldeman Rd., Schwenksville; 610-287-9349. historicsites.montcopa.org. Turn-of-the-century mansion & farm of PA's 25th Governor Samuel W. Pennypacker (1903-1907). Something Sweet: The Confectioner's World of 1900 - Enter the world of candy making with this fascinating exhibit focusing on candy making in the early 1900s. Closes 10/31. Tue.-Sat. 10 am-4 pm; Sun. 1-4 pm.

*FREE* Pottsgrove Manor 100 W. King St., Pottstown; 610-326-4014. www.historicsites.montcopa.org. Domestick Beings: Keeping a House, Making a Home - Exhibit focuses on the roles of women, servants & slaves in an upper-class colonial household. Closes 2/7. Suggested donation: $2. Tue.-Sat. 10 am-4 pm, Sun. 1-4 pm.

Richard Wall House Museum 1 Wall Park Dr., Elkins Park; 215-887-9159. Features 4 floors of exhibits, visitors' orientation center, springhouse, "Flapper" room, Victorian & Edwardian fashions & more. Donations accepted. Sun. 1-4 pm.

Swedish Cabin 9 Creek Rd., Drexel Hill; 610-237-8064. www.swedishcabin.org. This piece of America's past, located along the banks of Darby Creek, was over 100 years old at the time of the American Revolution & is believed to have been built (sometime between 1638 & 1655) by early Swedish settlers as part of the New Sweden colony. Call for group tours or appointments.

Tyler Arboretum 515 Painter Rd., Media; 610-566-9134. www.tylerarboretum.org. Totally Terrific Treehouses: Nature's Play - Tyler Arboretum adds 10 new entries including a childrens music program. Closes 9/27. $7; $6 seniors; $4 children 3-15; free for children under 3. Daily 8 am-dusk.

*FREE* Valley Forge National Historical Park 1400 N. Outer Line Dr., King of Prussia; 610-783-1099. www.nps.gov/vafo. Valley Forge Secrets & Spies - Learn 18th-century spy techniques as you try & unravel a plot against George Washington. Ends 9/5. Once Upon a Nation: Valley Forge After Hours - See what nights were like for the Continental Army under the leadership of General George Washington. Reservations: 215-629-4026. $55; $50 students; seniors; military & children under 13. Sat. 6 pm thru 10/24. Park open daily 6 am-10 pm.

Washington Crossing Historical Park/Memorial Building Auditorium 1112 River Rd., Washington Crossing; 215-493-4076. www.ushistory.org/washingtoncrossing. Celebrate Independence - Colonial games, re-enactors, reading of the Declaration of Independence. $8; $6 children 6-17; free for children under 6. 7/4 11 am-4 pm. Tours begin on the hour. $5; $4 seniors; $2 children 6-17. Tue.-Sat. 9 am-5 pm, Sun. noon-5 pm.

Wharton Esherick Museum 1520 Horseshoe Trl., Malvern; 610-644-5822. Guided Tours of the handcrafted home & studio of the "Dean of American Craftsmen." The Artist, The Poet & The Centaur - Commemorates the 85th anniversary of the Centaur Press' edition of Walt Whitman's 'Song of the Broad-Axe' with illustrations by Esherick. Closes 8/31. Mon.-Fri. (groups only) 10 am-4 pm; Sat. 10 am-5 pm; Sun. 1-5 pm.

*FREE* Wings of Freedom Museum 1155 Easton Rd., Willow Grove; 215-672-2277. www.dvhaa.org. See some of the world's rarest aircraft among this collection of over 15 restored jets & helicopters. Highlights include North America's only Messerschmitt Me262B jet trainer, an experimental Navy YF-2Y jet seaplane, world class collections of aircraft models & flight gear, exhibits on women in aviation, 100 years of flight, interactive exhibits for kids. Guided tours available. Wed. 10:30 am-3 pm; Sat.-Sun. 10:30 am-4 pm.