Though rich in history, Maudslay doesn't offer anything more than some nicely packed rolling doubletrack and some interesting views. The park is somehow split into two sides, one of which is mostly wooded trails, and the other half has double track going through some wide open spaces, including former house foundations, a few stone bridges, and a habitat for the bald eagle (which was nowhere to be seen). It's really just a nice place to take a leisurely ride; though the trails are perfect for tearing through, there are far too many horses, people, dogs, people with kids, kids with dogs, people on horses, and joggers to avoid.
Newburyport MA
http://www.singletracks.com/item.php?c=1&i=1569