Don your walking shoes, breathe in the ocean air and set out to discover this picturesque maritime town. You can join one of several organised walking tours or explore on your own. Portsmouth is filled with old homes and museums, and you'll have your pick of fascinating historic sites. Climb aboard the USS Albacore, a retired US Navy submarine offering tours and exhibits. View an 18th-century garden, striking stairway and period furniture at the Moffatt Ladd House, the home of William Whipple, a signatory of the Declaration of Independence, or follow a costumed guide through the John Paul Jones House, home of the Revolutionary War naval hero. For a broader look at the city's history, visit Strawbery Banke Museum, where over 40 buildings have been assembled to depict Portsmouth life from 1695 to 1950, complete with costumed actors. If you know architecture, Portsmouth's array of Colonial, Federalist and Neo-classical styles will dazzle you. Weary of walking? Sit down for a meal at one of Portsmouth's fine eateries or relax on a narrated harbour or whale-watching cruise.

From quaint town shops and quiet beaches, to honky tonk arcades and carousels, the York area is guaranteed to entertain the whole family. Old York, run by the local historical society, contains nine different restored buildings, including "The Old Gaol," the oldest jail in America. The beautiful coastline provides cliff walks with views of an authentic Maine lighthouse. Head to nearby York Beach and visit York's Wild Kingdom, an amusement park and zoo that is home to Rewa, a White Bengal tiger.

You've got to walk the Freedom Trail the first time you visit Boston. That's just a given. Make sure you step off the line on the pavement, though, and explore some of Boston's fine museums (try the Gardner—art masterpieces displayed in their collector's mansion) and old neighbourhoods (like the North End, where you can get the best cannoli this side of Italy). You can't claim to have experienced real Boston culture, though, unless you've watched a Red Sox game from the bleachers.

The island community of Marathon in the Florida Keys is a tropical getaway for your whole family. It maintains a retro, nautical atmosphere with family-friendly festivals and attractions. Activities include dolphin swims, snorkeling, and boating. Seafood festivals are scheduled throughout the year, and plenty of local restaurants feature fresh catches. Fishing is ideal off the pristine Sombrero Beach. Visit Crane Point to hike to the preserved home of a 20th century settler family.

Vilnius, the capital of Lithuania, contains one of the largest surviving medieval quarters in Europe. Included on the UNESCO World Heritage List, Old Town contains almost two thousand medieval, gothic, renaissance, and baroque buildings, all centered on the neo-classical cathedral and town hall. Other popular attractions include the KGB Museum, located in a former Soviet prison, and the 13th century Higher Castle, which affords a glorious view of the city center.