A guide to the city's cultural attractions -- from the historic H.H. Richardson Courthouse to a new pop-up art gallery -- is now as close as your phone or mobile device. The Springfield Cultural District announced Tuesday that its Cultural Walking Tour Map is now available as a free app for devices running either Google's Android or Apple's iOS. The map, created last summer, was previously only available as a paper handout or as a download from the website. It will still be available in those formats, and as a video map at springfieldculture.org.