FONTHILL, E. Court St., Doylestown, PA 18901. 215-348-9461. Mercer’s home, stands as a grand castle with 44-rooms filled with decorative tiles and prints collected from around the world. Open all year except New Year’s, Thanksgiving and Christmas. Guided tours only, reservations suggested. Mon.-Sat. 10-5 & Sun. noon-5. Last tour at 4 pm. Admission: $5 adults, $4.50 over age 62, $1.50 youth & free under 6. V, MC.

MARGARET R. GRUNDY MUSEUM, 610 Radcliffe St., Bristol, PA 19007. 215-788-9432. Victorian home of US Sen. Joseph R. Grundy. Mon.-Fri. 1 to 4. Sat. 1-3. Admission free.

HISTORIC FALLSINGTON, 4 Yardley Ave., Fallsington, PA 19054. 215-295-6567. Pre-revolutionary village mirrors 300 years of American Architectural history. Open May thru October. Tours every hour, Mon.-Sat. 10-4, Sun. 1-4. Group tours by appointment.

HOLCOMBE-JIMISON FARMSTEAD MUSEUM, Route 29, Lambertville, NJ 08530. 908-995-2237 or 609-397-1810. A museum dedicated to collect, restore and preserve every variety of material illustrative of the history of Hunterdon County and New Jersey. Sundays 1-4 pm May-October. Tours can be arranged at other times.

HUNTERDON MUSEUM OF ART, 7 Center St., Clinton, NJ 08809. 908-735-8415. The Hunterdon Museum of Art, housed in a historic mill, has exhibitions of contemporary art, art classes for all ages, and a shop with gifts for everyone. Tues.-Sun. 11-5.

JAMES A. MICHENER ART MUSEUM, 138 S. Pine St., Doylestown, Pa. 18901, 215-340-9800. Known as the Art and Soul of Bucks County, the museum offers an equisite collection of Pennsylvania Impressionist paintings, hosts nationally touring special exhibitions and showcases important regional artists. Inspiring outdoor sculpture gardens, cafe and gift shop. Tues.-Fri. 10 a.m.-4:30 p.m., Sat. 10-5, Sun. noon-5. Adults $6.50; Senior $6; Students with ID and children 6-18 $4; children under 6 free. Major credit cards accepted.

JAMES A. MICHENER ART MUSEUM, Union Square Drive, New Hope, Pa. 18938, 215-862-7633. Located in the heart of Bucks County’s historic arts colony, the museum extends the mission of preserving the arts and cultural heritage of the area. It is home to two permanent exhibitions as well as changing exhibits. Tues.-Sun. 11 a.m.-5 p.m., Sat. 11-6, Closed Tues., Jan.-Mar. Adults $5; Seniors $4; Children 6-12 $2; Children under six free.

MARSHALL HOUSE, 60 Bridge St., Lambertville, NJ 08530. 609-397-0770. Childhood home of James W. Marshall, whose discovery of gold started the Gold Rush. Museum depicting early Lambertville life. Open 1-4 on the 2nd and 4th weekends, May through October. Admission free.

MERCER MUSEUM, Pine & Ashland Sts., Doylestown, PA 18901. 215-345-0210. www. mercermuseum.org. Open Mon.-Sat. 10-5, Sun. 12-5, Tues. evening 5-9. Adults $6.00, Senior citizens $5.50, Ages 6-17 $2.50, Under 6 free. Closed Thanksgiving, Christmas and New Years Day.

MORAVIAN POTTERY & TILE WORKS, 130 Swamp Road (Route 313), Doylestown, PA 18901. 215.345.6722. A National Historic Landmark, the tile works is maintained as a "working history" museum by the Bucks County Department of Parks and Recreation. Handmade tiles are still produced in a manner similar to that developed by the pottery's founder and builder, Henry Chapman Mercer (1856-1930). Tours, offered every half-hour, consist of a 17-minute video and a self-guided walk through the facility. Admission fees and operating hours are subject to change. Please call to verify.

PARRY MANSION MUSEUM, S. Main & Ferry Sts., PO Box 41, New Hope, PA 18938. 215-862-5652. Splendid small museum furnished to reflect the Colonial period to 1900, owned by the New Hope Historical Society. May 1 to Oct. 31, 1-5 pm, Sat. & Sun, Group tours by appt. any day. Nominal admission fee.

THE PEARL S. BUCK HOUSE, a National Historic Landmark, 520 Dublin Rd., Perkasie, PA 18944. 215-249-0100. House tour includes intercultural art and architecture; Nobel and Pulitzer Prizes. Guided tours March through December: Groups by appointment. AE,V, MC.

PENNSBURY MANOR, 400 Pennsbury Memorial Lane, Morrisville, PA 19067. 215-946-0400. 17th Century country plantation of William Penn. April-Dec. Tues.-Sat. 9-5, Sun. 12-5.

PRALLSVILLE MILL, Delaware River Mill Society, Box 268, Stockton, NJ 08559. 609-397-3586. Mill complex dating to early 19 th century. See calendar for special events.

RED MILL MUSEUM VILLAGE, 56 Main St., Clinton, NJ 08809. 908-735-4101. 10 acres of rural heritage featuring 1810 Red Mill, limestone quarry and more. Special events & family activities. April-October, Tues.-Sat. 10-4, Sun. 12-5. Admission: adults $5.00, senior citizens $4.00, ages 6-16 $3.00, free under 6 years.

SPRUANCE LIBRARY, Pine & Ashland Sts., Doylestown, PA 18901. 215-345-0210. Tues. 1-9, Wed., Thurs., Fri. and Sat. 10-5. Admission: adults $6.00, Over 60 years $5.50, Youth $2.50, Free under 6 years. Group rates available.

SUMMERSEAT, The Historic Morrisville Society, Hillcrest & Legion Aves., Morrisville, PA 19067. 215-295-9287. Georgian mansion used by Washington during Revolution. 1st Saturday of the month & by appt.

WASHINGTON CROSSING HISTORIC PARK, 1112 River Rd. Washington Crossing, PA 18977. 215-493-4076, Site of Washington’s crossing of the Delaware. Park includes Thompson-Neely house and Bowman’s Tower. Tues.-Sat. 9-5, Sun.12-5.