Is there a food more humble yet universally adored than the sandwich?

And while one person's go-to hamburger snack might be another's katsu sando or chivito, there's hardly a country on the planet that doesn't turn to some type of bread with something stuffed inside it to cure a craving.

Traveling the world's sandwiches is, in a way, like traveling the world.

To help narrow your choices for the sandwich to plan your next trip around, here are 23 of the world's best sandwiches:

Pambazo, Mexico

Tortillas might first come to mind when it comes to Mexico. But one of the country's most famous antojitos (street snacks or appetizers) is the pambazo, a favorite street food sandwich from Veracruz and Puebla said to have been inspired by the shape of a Mexican volcano.

It's a seriously filling thing featuring bread tinted red thanks to a soak in slightly spicy guajillo sauce. Open up wide for the potatoes and Mexican chorizo inside, topped with lettuce, cheese and cream.