Delaware is home to several historic sites that reflect its rich heritage. One notable site is the New Castle Historic District, which features well-preserved colonial buildings and offers a glimpse into 18th-century life. Another significant location is Fort Delaware, a Civil War-era fort that served as a prison for Confederate soldiers. Additionally, the First State Heritage Park in Dover showcases Delaware's role in American history, including its status as the first state to ratify the Constitution. Visitors can explore various landmarks, such as the Old State House and the John Dickinson Plantation, which highlight the state's early governance and agricultural history.