Classified for credit

Frank Lloyd Wright's Fallingwater is a National Historic Landmark illustrating organic architecture, engineering design principles, and 20th-century design history.

Self-guided auto tour of Gettysburg National Military Park — covers Civil War tactics, Pennsylvania's role, and the war's turning-point significance.

NPS Civil War battlefield with visitor center, cyclorama, and ranger programs covering the 1863 turning-point battle and its political consequences.

National cemetery and NPS visitor center at Gettysburg — covers Civil War military history, Lincoln's Gettysburg Address, and memorialization.

Civil War battlefield with NPS visitor center, cyclorama, and ranger-led programs — covers military strategy, the turning point of the war, and Reconstruction.

NPS visitor center for the decisive Civil War battle — covers military strategy, Union-Confederate political causes, and Reconstruction through films, cyclorama, and artifacts.

UNESCO World Heritage Site where the Declaration of Independence and Constitution were debated and adopted — primary-source American founding history and civics.

NPS-managed park preserving Independence Hall, Liberty Bell, and core sites of American founding — primary-source Constitutional history.

Major museum in Philadelphia with immersive exhibits on the American Revolution — primary-source history, civics, and the founding era.

Interactive museum dedicated to the US Constitution — covers constitutional law, the founding era, amendments, and civic rights in hands-on exhibit galleries.

Nation's largest collection of historic locomotives and rail equipment — covers railroad history, industrial development, and steam-era engineering.

NPS site with a working roundhouse and restored steam locomotives — covers railroad history, steam-engine mechanics, and industrial-era social history.

Living-history farm in Lancaster County demonstrating Amish agricultural and domestic practices — covers plain-community history, religious heritage, and rural economics.

Wooded hill on the Gettysburg battlefield where Union forces anchored the left flank on July 2, 1863 — supports tactical Civil War history and terrain-based geography.

Key Union defensive position on the Gettysburg battlefield — covers Civil War tactics, the Battle of Gettysburg, and its strategic significance.

Immersive living-history experience presenting the Battle of Gettysburg from a child's perspective — Civil War history and civilian life.

Heritage railroad operating 19th-century passenger cars through Pennsylvania countryside — railroad history, steam/diesel engineering, and industrial-era social history.

Restored 19th-century Pennsylvania farmstead with living-history demonstrations — covers colonial-era agriculture, animal husbandry, and daily settler life.

Walk-through WWII-era submarine and Spanish-American War cruiser at Independence Seaport Museum — covers naval history, marine engineering, and military technology.

Home where Lincoln stayed the night before the Gettysburg Address — primary-source Civil War history and the origins of a pivotal presidential speech.

Iconic Gettysburg battlefield rock formation used by Confederate sharpshooters — primary-source Civil War military history and terrain study.

Preserved narrow-gauge railroad with operating steam locomotives — covers 19th-century industrial history, rail engineering, and Appalachian heritage.

Gettysburg cavalry battlefield — covers the July 3, 1863 Union cavalry actions, Civil War tactics, and the decisive role of the Eastern Theater.

Eisenhower's retirement home and working farm in Gettysburg — covers WWII leadership, Cold War presidency, and 1950s American political history.