330 meter long viaduct runs through Castlefield, a part of Manchester so old that you can see the remains of a roman fort! The viaduct was built in 1892 and it carried passenger and frieght trains from Manchester Central Station until the rail line was closed in 1969. It has been transformed in 2022 into a "garden in the sky", which after a experimental test year, has received approval to be contiuously open and expanded to its full length, forming part of the city's network of urban greenery. Perhaps the best way to see it all is by ridng the Manchester LRT, which runs parallel, also on anot…