Mexico City, Mexico

Mexico City's street food is a living heritage stretching back to Aztec tianguis markets, with over 15,000 informal vendors serving tacos de canasta and tlayudas daily. Tacos al pastor cost $1 on average, which is 30% cheaper than the typical rival at tourist spots, and more than 80% of locals eat street food weekly. This deep-rooted tradition rivals Bangkok's #1 variety but excels in cultural continuity—each tlacoyo or elote connects diners to a lineage spanning 500 years, a historical depth unmatched elsewhere.