(GMT)08 JUL 2017 ME8C:
Paris Metro VS London Underground
Although the Paris Metro system has six core zones (similar to London) most of the network is within zone 1. That's because even though Paris has more stations (303 to London’s 270) the geographical area is much more condensed; around the same size as the zone 3 boundary in London.
In London, the average amount of time between two stations is almost exactly two minutes. In Paris it's literally one minute — sometimes even shorter. Think Leicester Square to Covent Garden in a LOT of places. In fact Paris's stations are SO close you can often see the next one up from the platform you're standing on.........................Follow the link for more interesting information