It is subjective to determine the top 10 cities with the most tourist-friendly public transportation systems as it can vary depending on individual preferences and experiences. However, here are ten cities that are widely recognized for their efficient and tourist-friendly public transportation systems:
1. Tokyo, Japan
2. London, United Kingdom
3. Seoul, South Korea
4. Singapore, Singapore
5. Hong Kong, China
6. Paris, France
7. Berlin, Germany
8. New York City, United States
9. Amsterdam, Netherlands
10. Toronto, Canada
These cities are known for their well-connected networks, easy-to-use ticketing systems, extensive coverage, multilingual signage, and reliable services that cater to the needs of tourists. However, it is important to note that many other cities across the world also have excellent public transportation systems.