The town was founded in 1623, and a walk through Portland's historic area feels like a stroll back in time to that era. "Residents" in period costume populate the area, and at three working crafts shops, you can watch coopers, boat builders and potters at work on 17th-century trades. Today, the historic district's center, Strawbery Banke, consists of 10 downtown acres and 46 historic buildings, including Georgian-style homes that showcase18th-century prosperity. Some buildings have been restored with period furnishings and exhibits, and many are available for viewing and tours.
To get maximum satisfaction from visiting this place of interest you will need a good city quide which will help you find the places to stay, to eat and of course to sightsee. Now it is all available in one app which can be easily downloaded from the Appstore. Portsmouth NH City Guide is compatible with iPhone, iPod touch, and iPad and seems to be indispensable in case you are going to visit this picturesque town.
One more city guide app from Snappii which won't let you get lost in an unknown city.