Today I'm looking at linear parks – effectively, old road or rail lines that are now green vectors for hikers and bikers. Some, like my location today, are in the middle of busy cities: I am in Seoul, South Korea, on a 1970s flyover that was threatened with demolition yet rescued and turned into a leafy, elevated walkway above the tumult of the city. New York has a similar option, the High Line, which has taken over a former elevated freight line in Manhattan.Two rail links now turned into cycle/walkways that I particularly like: Singapore's Rail Trail and the Great Western Greenway between Westport, Co Mayo and Achill Island in the west of Ireland.This podcast is free, as is my weekly newsletter. Sign up here. Hosted on Acast. See acast.com/privacy for more information.