Underground or metro rail systems are arguably indispensable for city residents and visitors: capitals without one, such as Dublin, are notorious for heavy traffic and long commutes. For the best service, Europeans should look to Oslo, according to luggage storage provider Bounce, which analysed reviews posted on Google of the continent’s subway systems. Oslo’s 101-stop network was highly-rated due to it being connected to the country’s wider public transport system at Jernbanetorget station, which is “easy to get around” and “very well organized,” according to Bounce’s explanation of the revi…