Concord is the capital of New Hampshire. With a population of about 42,000 as of 2008 it is the third largest city in the state. Concord lies along the Merrimack River, completely within the Merrimack River watershed.  Among the many landmarks and tourist attractions in Concord are the New Hampshire State house, which is the oldest state house where the legislature meets in its original location; and The Eagle Hotel, which has been a downtown landmark for 150 years- many U.S. Presidents have either stayed there and/or dined there, including Ulysses S. Grant, Rutherford Hayes and Benjamin Harrison.