'Open-plan'. Metro and mainline, trains, tracks and passengers (not to mention shopping mall, food hall, cinema complex - the usual suspects) all sharing the same 90s designed space. It actually works very well imho. All built within the old mainline terminus of the Estaciòn del Norte (you can see the impressive ironmongery of the old terminus at the top).
Sight and sound. Just like it and always have ever since I first heard it every morning stuck in a traffic jam on the M40 into London. Silly video but great pop song! www.youtube.com/watch?v=wvAnQqVJ3XQ