The largest U.S. state is home to the 4,215-square-mile Katmai National Monument, the largest of all other United States national parks and monuments in size. Glacier Bay National Monument, also in Alaska, ranks second with 3,554 square miles, and ------------------------- is third with 3,472. Katmai (pronounced "cat-my") is about four-fifths as large as Connecticut, and more than twice the size of Delaware.?