Vietnam Flash Tours is a travel agency in Hanoi that runs visits to the train track street, where small cafes and stalls line both sides of a narrow railway. The visit involves sitting in a ground-floor cafe with a beer or a drink as the train passes through the narrow lane between the houses. Trains pass about every three hours, but the times differ by date, so the schedule has to be checked first to take photos. Vendors offer seats as soon as visitors arrive, and when police block both entrances, access becomes difficult.