Sonoma, Tuscany and Australia's Hunter Valley have emerged as the top wine destinations in the world in a TripAdvisor survey that gathered rankings from millions of online reviews.

The survey identified 32 favorite destinations around the world for wine lovers. Sonoma County in California topped the 2012 Travelers’ Choice Wine Destination list for the United States, while Tuscany edged out the wine-growing regions of France and Spain to head up the European rankings.

Though North America may be best known abroad for its California wineries, travelers also singled out areas such as Willamette Valley in Oregon, Finger Lakes in New York, Walla Walla in Washington, and Palisade in Colorado as favorite wine destinations.

TripAdvisor points out that while Sonoma County may not produce as much wine as Napa Valley, readers gave the area high marks for its unpretentious vibe, laid-back appeal, local spas and range of wine styles.

Tuscany, home to world-class wine-producing zones including Chianti, Brunello di Montalcino and Vino Nobile di Montepulciano, emerged as the favorite European wine destination, thanks to its mix of wine, culture and history.

Here are the top wine destinations around the world, according to reader rankings from TripAdvisor:

United States:

1.      Sonoma County, California
2.      Napa Valley, California
3.      Willamette Valley, Oregon
4.      Finger Lakes, New York
5.      Long Island, New York
6.      Paso Robles, California
7.      Temecula Valley, California
8.      Walla Walla, Washington
9.      Palisade, Colorado
10.    Plymouth, California

Europe:

1.     Tuscany, Italy
2.     Aquitane, France
3.     Provence, France
4.     Umbria, Italy
5.     Sicily, Italy
6.     Languedoc-Roussillon, France
7.     Burgundy, France
8.     Champagne, France
9.     Costa de la Luz, Spain
10.   Porto District, Portugal

South Pacific:

1.      Hunter Valley, Australia
2.      Auckland Region, New Zealand
3.      Canterbury Region, New Zealand
4.      Queenstown, New Zealand
5.      Hawke’s Bay Region, New Zealand
6.      Marlborough Region, New Zealand
7.      Barossa Valley, Australia
8.      Margaret River, Australia
9.      McLaren Vale, Australia
10.    Gisborne, New Zealand