Though it consists of a single square mile of land, the small island of New Castle, 3 mi southeast from downtown via Route 1B, was once known as Great Island. The narrow roads and coastal lanes are lined with pre-Revolutionary houses, making for a beautiful drive or stroll. Wentworth-by-the-Sea (603/422–7322 www.wentworth.com), the last of the state's great seaside resorts, towers over the southern end of New Castle on Route 1B. It was the site of the signing
of the Russo-Japanese Treaty in 1905, when Russian and Japanese delegates stayed at the resort and signed an agreement ending the Russo-Japanese War that would win President Theodore Roosevelt a Nobel Peace Prize.
Portsmouth, New Hampshire, United States