Harmony Museum on Mercer Street in Harmony offers guided tours from 1 to 4 p.m. daily except Mondays. Reservations are suggested for weekends and required for groups. Call 724-452-7341 or 888-821-4822, or visit www.harmonymuseum.org.

<B>Drake Well Museum</B>, 202 Museum Lane, Titusville, is open 9 a.m. to 5 p.m. Wednesdays through Fridays. The Heritage Lecture Series installment on March 29 celebrates Col. Edwin Drake's 193rd birthday with cake and a slide show “Then and Now II” by Earl Yingling. Doors open at 6:30 p.m. with the program at 7 p.m. Admission is $2. Call 814-827-2797 or visit drakewell.org.

<B>Carnegie Science Center,</B> North Side, hosts a Space Out! Astronomy Weekend featuring out-of-this-world programs, presentations by experts in the field, and hands-on activities for stargazers of all ages, Saturday and Sunday. The center is open regularly from 10 a.m. to 7 p.m. Saturdays and 10 a.m to 5 p.m. Sundays through Fridays. Admission is $17.95 for adults and $11.95 for children ages 3 to 12. Most activities are included in the admission price, but some, like Omnimax films, cost extra. Call 412-237-3400.<B>Fort Pitt Museum</B> in Point State Park is featuring “The American Frontier Rifleman: Tall Tales & Truth” through April 30. Visit www.heinzhistorycenter.org.<B>Heinz History Center</B>, 1212 Smallman St., presents “Stars and Stripes: An American Story” through June 17. The center is open daily from 10 a.m. to 5 p.m. Admission is $10 for adults, $9 for senior citizens, $5 for students with ID and for children ages 4 to 17, and free for children 3 and younger. Call 412-454-6000 or visit www.heinzhistorycenter.org.<B>Children's Museum</B>, 10 Children's Way, Allegheny Square, continues the “Wheels” exhibit through May 13. Hours are 10 a.m. to 5 p.m. Mondays to Saturdays and noon to 5 p.m. Sundays. Admission is $12 for adults, $11 for children ages 2 to 18 and senior citizens, and free for children younger than 2. Call 412-322-5058 or visit www.pittsburghkids.org.<B>Carnegie Museum of Natural History</B>, 4400 Forbes Ave., Oakland, has free admission from 3:30 to 8 p.m. Thursdays in March. Andy Warhol's eight “Dogs and Cats” paintings are on view in the Entrance Gallery through June 30. Admission is $15 for adults, $12 for senior citizens, and $11 for students with ID and children ages 3 to 18, and free for members and children younger than 3. Hours are 10 a.m. to 5 p.m. Tuesdays through Saturdays, with additional hours until 8 p.m. Thursdays, and noon to 5 p.m. Sundays. Call 412-622-3131 or visit the website www.carnegiemnh.org.