There are many cities around the world that are known for their efficient and extensive public transport systems.

1. Tokyo, Japan - Tokyo has an extensive network of trains, buses, and subways that are punctual, clean, and easy to navigate.

2. Singapore - Singapore's public transport system includes buses, trains, and a light rail system, which are all clean, efficient, and affordable.

3. Hong Kong - Hong Kong's public transport system is one of the most extensive in the world, with buses, trains, trams, ferries, and even a cable car system.

4. Zurich, Switzerland - Zurich has an extensive public transport network that includes trams, buses, trains, and boats, which are all integrated and run on time.

5. London, United Kingdom - London has one of the oldest and most extensive public transport systems in the world, including the iconic red double-decker buses, the Tube, and the Overground.

6. Paris, France - Paris has an efficient and extensive public transport system, including buses, trains, and the iconic Metro, which make it easy to get around the city.