Historic spot & national park with green space for public gatherings, plus a courthouse museum.
"Even though those searching for backcountry adventure often overlook this small state, the National Park Service does have some spectacular things to offer here. As the first state to ratify the constitution in 1787, visitors are able to see an important piece of U.S. history in the First State National Historical Park. Walk through the forested trails of Woodlawn, or visit the 1732 Court House (where abolitionists stood trial for standing up for their beliefs). If visiting in the spring, be sure to go to New Castle to experience an annual celebration of Delaware’s independence from Pennsylvania and Great Britain." [Travel+Leisure]
National Park
Website: First State National Historical Park
Address: 211 Delaware St, New Castle, DE 19720
Sources: Best National Park in Every State