Museums

KREEGER MUSEUM"Gene Davis: Interval," through July 29. The Philip Johnson-designed former residence of Carmen and David Kreeger displays their collection of 19th- and 20th-century paintings and sculpture, and traditional African art. Open Saturday 10 to 4; guided tours by reservation only Tuesday-Friday at 10:30 and 1:30. $8, seniors and students $5. 2401 Foxhall Rd. NW. 202-338-3552.

LIBRARY OF CONGRESS"On the Cutting Edge: Contemporary Japanese Prints," through June 30; "A Century of Creativity: The MacDowell Colony 1907-2007," through Aug. 18; "Shakespeare in America," through Aug. 18; "Bob Hope and American Variety," indefinitely; "American Treasures of the Library of Congress," rotating permanent exhibition ("American Treasures" information: 202-707-3834). Open Monday-Saturday 10 to 5. 10 First St. SE. 202-707-4604.

LOUDOUN MUSEUM Permanent collection of Indian, Revolutionary War, Civil War and local history objects; Colonial Garden and children's Discovery Room. Open Friday-Saturday 10 to 5, Sunday 1 to 5, Monday and Wednesday-Thursday 10 to 5. $3, students, teachers and seniors $1, age 4 and younger free. 16 Loudoun St. SW, Leesburg. 703-777-7427.

MANASSAS MUSEUM Permanent exhibits of the Virginia Piedmont, the Civil War and Reconstruction, and the early years of Manassas. Open Tuesday-Sunday 10 to 5. $3, seniors, students and teachers $1, ages 4 and younger free. 9101 Prince William St., Manassas. 703-330-2787.

MARINE CORPS Multimedia exhibitions about the history of the U.S. Marine Corps and its role in the history of the United States, including re-creations of a Korean War battlefield and a Vietnam combat zone, indefinitely. Open daily 9 to 5. 18900 Jefferson Davis Hwy., Triangle. 877-653-1775.

MOUNT VERNON The home and burial place of George Washington. Open daily 8 to 5. $13, seniors $12, ages 6 through 11 $6, younger free. 3200 Mount Vernon Memorial Hwy., Alexandria. 703-780-2000.

NATIONAL ARCHIVES"Public Vaults," indefinitely; "The Charters of Freedom," indefinitely. Permanent displays of the Declaration of Independence, the Constitution and the Bill of Rights. Open daily 10 to 7. Ninth and Constitution NW. 202-357-5000.

NATIONAL BUILDING MUSEUM"The Green House: New Directions in Sustainable Architecture and Design," through June 24. "Reinventing the Globe: A Shakespearean Theater for the 21st Century," through Aug. 27. Open indefinitely: "Cityscapes Revealed: Highlights From the Collection"; "Washington: Symbol and City." Building tours Monday-Wednesday at 12:30; Thursday-Saturday at 11:30, 12:30, 1:30; Sunday at 12:30 and 1:30. Museum open Monday-Saturday 10 to 5, Sunday 11 to 5. Fourth and F NW. 202-272-2448.

NATIONAL FIREARMS MUSEUM Permanent exhibits tracing the evolution of firearms and their role in the history of the United States. Open daily 10 to 4. 11250 Waples Mill Rd., Fairfax. 703-267-1600.

NATIONAL GALLERY OF ART, EAST BUILDING"Eugène Boudin at the National Gallery of Art," through Aug. 5; "States and Variations: Prints by Jasper Johns," through Oct. 28; "Small French Paintings," indefinitely. Permanent collection of 20th-century art. Open Friday-Saturday and Monday-Thursday 10 to 5, Sunday 11 to 6. Fourth and Constitution NW. 202-737-4215 (TDD: 202-842-6176).

NATIONAL GALLERY OF ART, WEST BUILDING"Claude Lorrain -- The Painter as Draftsman: Drawings From the British Museum," through Aug. 2; "Fabulous Journeys and Faraway Places: Travels on Paper, 1450-1700," through Sept. 16; "Private Treasures: Four Centuries of European Master Drawings," through Sept. 16; "Paul Mellon and the National Gallery of Art," through Dec. 31. Permanent collections of European and American paintings, sculpture and decorative arts from the 13th through the 19th centuries, and an outdoor sculpture garden. Open Monday-Saturday 10 to 5, Sunday 11 to 6. Sixth and Constitution NW. 202-737-4215 (TDD: 202-842-6176).

NATIONAL GEOGRAPHIC"National Geographic Maps: Tools for Adventure," through July 29; "Zakouma, Elephant Crisis in Chad," through Sept. 3. Open Monday-Saturday 9 to 5, Sunday 10 to 5. 17th and M NW. 202-857-7588.