Thames River Heritage Park Foundation is a nonprofit organization whose mission and purpose is to promote, support, and sustain the Thames River Heritage Park, a collection of heritage sites linked by water which capture the history and culture of life along the Thames River. a new kind of state park. One without boundaries. Thames River Heritage Park is a collection of over 20 national and historic sites along the shores of the Thames River – linked by a water taxi – that tell the stories that shaped our nation.