First State National Historical Park is a proposed addition to the National Park System of the United States

National Park Service

The National Park Service is the U.S. federal agency that manages all national parks, many national monuments, and other conservation and historical properties with various title designations...

. If established it would be the first and only NPS unit in Delaware

Delaware

Delaware is a U.S. state located on the Atlantic Coast in the Mid-Atlantic region of the United States. It is bordered to the south and west by Maryland, and to the north by Pennsylvania...

, the first state to ratify the U.S. Constitution

United States Constitution

The Constitution of the United States is the supreme law of the United States of America. It is the framework for the organization of the United States government and for the relationship of the federal government with the states, citizens, and all people within the United States.The first three...

. Under the proposed October 2009 legislation, the Secretary of Interior

United States Secretary of the Interior

The United States Secretary of the Interior is the head of the United States Department of the Interior.The US Department of the Interior should not be confused with the concept of Ministries of the Interior as used in other countries...

 would be authorized to acquire by donation or purchase from willing sellers properties including:

• New Castle Historic District
• Fort Christina
  Fort Christina
  Fort Christina was the first Swedish settlement in North America and the principal settlement of the New Sweden colony...
  
  
• Old Swedes Church
  Holy Trinity Church (Old Swedes)
  Holy Trinity Church, also known as Old Swedes is a church in Wilmington, Delaware that is a National Historic Landmark. It was dedicated on July 4, 1699.-History:...
  
  
• John Dickinson Plantation
  John Dickinson House
  The John Dickinson House, generally known as Poplar Hall, is located on the John Dickinson Plantation, a property owned by the State of Delaware and open to the public as a museum by the Delaware Division of Historical and Cultural Affairs...
  
  
• Lombardy Hall
  Lombardy Hall
  Lombardy Hall was the home of Gunning Bedford, Jr., a delegate to the constitutional convention and a signer of the U.S. constitution.It was declared a National Historic Landmark in 1974....
  
  
• Stonum
  Stonum
  Stonum, also called Stoneham or the George Read House, was the home of George Read, a signer of the Declaration of Independence. His advocacy enabled Delaware to become the first state ratifying the declaration...
  
  
• Lewes Historic District
  Lewes, Delaware
  Lewes is an incorporated city in Sussex County, Delaware, USA, on the Delmarva Peninsula. According to the 2010 census, the population is 2,747, a decrease of 6.3% from 2000....
  
  
• Dover Green
  Dover, Delaware
  The city of Dover is the capital and second largest city in the U.S. state of Delaware. It is also the county seat of Kent County, and the principal city of the Dover, Delaware Metropolitan Statistical Area, which encompasses all of Kent County. It is located on the St. Jones River in the Delaware...
  
  

The City of New Castle

New Castle, Delaware

New Castle is a city in New Castle County, Delaware, six miles south of Wilmington, situated on the Delaware River. In 1900, 3,380 people lived here; in 1910, 3,351...

is the suggested headquarters for the park.