
World's Greatest Cities
The past coexists with the present in these special cities, creating unique cultures.

The past coexists with the present in these special cities, creating unique cultures.

Whitewater rafting on the Kennebec River; Maine puffins with researcher Stephen Kress.

Sailing on the tall ship Lynx; hot-air ballooning above Quechee, Vt.; The Lost Kitchen in Maine.

In Ancient Cities, religious and cultural centers have shaped the ways in which we view the world.

Many of manmade wonders characterize powerful forces, or commemorate power lost.

Cooking French-New England fusion dishes with Jacques Pépin; Mount Monadnock; Ducati motorcycles.

The challenges and surprises of travel are shaped into a finished show.

Sailing in Newport, R.I.; the coastal town of Westerly, R.I.; whirlpool; New England general store.

The longest skating trail in the U.S.; chef Stacy Cogswell cooks a classic New England meal.

Alpine adventures include bobsledding, hiking and a boat ride.

Mayfair Farm in New Hampshire; the Isles of Shoals off the coast of Portsmouth, N.H.; Red Bee Honey.

The palace of Maria Theresa; Hapsburg crown jewels; a picnic on the Danube.

Sailing on the tall ship Lynx; hot-air ballooning above Quechee, Vt.; The Lost Kitchen in Maine.

A behind-the-scenes look at "Big Pacific" includes highlights and challenges of filming wildlife.

Italy's classic hill towns include San Gimignano, Cortona, Orvieto and Civita di Bagnoregio.

The longest skating trail in the U.S.; chef Stacy Cogswell cooks a classic New England meal.

Hunting for truffles; artichoke festival; farmhouse feast; a ride through cypress groves.

Maine's wild blueberries; classic blueberry pie; New England's lighthouses; Rose Island Lighthouse.

The quest to multiply includes an array of unusual behaviors and adaptations; male pregnancy.

Fashion in Milan, Italy; cruising Lake Como; lakeside village of Varenna.