Global Subway Sandwiches Flavors

American sandwich shop Subway is celebrating National Sandwich Day Nov. 3 with nearly 38,000 shops in 100 countries. Subway had hoped to celebrate the annual sandwich day with the milestone of opening its 38,000th shop but Hurricane Sandy has forced some stores to close putting a damper on the company's official tally.

See Global Subway Sandwiches Flavors Slideshow

National Sandwich Day marks the anniversary of the birth of John Montagu, the fourth Earl of Sandwich who is credited with inventing the sandwich during a marathon card game in the18th century. Subway serves approximately 2.6 billion sandwiches per year, many of which you won't find on the menu in the U.S.

The chain claims there are more than 37 million possible sandwich variations using the ingredients found at Subway restaurants. While the Subway core menu is relatively the same no matter if your sandwich is made in Boston, Berlin, Brisbane or Beirut, Like other fast-food chains like McDonald's and Kentucky Fried Chicken, Subway adapts its menu to local customs, religious traditions and food preferences. In the Middle East, Subway restaurants are halal (pork is not sold) and in India, no beef or pork is served and several vegetarian-only Subway shops have opened.

Subway sandwich artists make a Wagyu beef sandwich served with tomato relish in Australia; a smoked chicken and cream cheese salad sandwich in Brazil; and a blend of corn, peas, and carrots in a mayonnaise-based sauce in India.

Lauren Mack is the Travel Editor at The Daily Meal. Follow her on Twitter @lmack.