Europe Tunnel vision: London celebrates 150th birthday of its iconic 'Tube'

Construction, crowding, and labor disputes rattle commuters daily. But world's oldest underground passenger rail is 'still at the heart of everything London does,' says London's elated mayor.

Ki Price/Reuters

Blame poor ventilation, frequent delays, or simply the repeated experience of jostling up against other commuters' armpits on a crowded rush hour train – generations of users have developed a love-hate relationship with the London Underground.