but from berlin's vast central station, i'm taking an even cheaper form of transport for a spot of sightseeing. all right, we're doing it — we're crossing the tramway. ahh! fabulous! oh, it's beautiful. i can see the tv tower on my left. and it's so cloudy, the tip of it is just unseen. alexanderplatz is, these days, the touristic heart of the capital. until 1989, it was the main public square in communist east berlin. so, i was born in 1990, which is a year after the berlin wall came down, so for myself — and i'm sure for generations younger — there's no recollection of those news events,