[6] Highlights of the park include the Princeton Battlefield site; the Clarke House Museum; the site of the Mercer Oak, a tree which stood in the middle of the battlefield until recent years; the Ionic Colonnade designed by Thomas U. Walter (fourth Architect of the U.S. Capitol); and a stone patio marking the grave of 21 British and 15 American soldiers killed in the battle.

The park's hiking trails lead to the Delaware and Raritan Canal and to the 588-acre (2 km2) adjacent property of the Institute for Advanced Study.

[1] For several years, the Institute for Advanced Study has been attempting to build faculty housing on the portion of Princeton Battlefield known as Maxwell's field.

[7][8] The Princeton Battlefield Society is protesting the project in court, and national and local preservation organizations are working to prevent construction on the property.

[11] On May 30, 2018, the Trust announced that it had finalized the purchase after raising almost $3.2 million from private donors, which was matched by an $837,000 grant from the National Park Service and the Mercer County Open Space Assistance Program.