When I was a kid one I would often fall asleep finding far away away stations through the static on a little Grundig shortwave radio. I loved tuning my way around the dial. 

Every few years I stumble upon sites that collect world radio streams. They're always worth exploring. Radio Garden is one of the better ones. My only quibble is that it doesn’t integrate w/ Apple Music/Spotify. 

Other radio sites worth checking out:  Globe Radio, RadioHear, BRAWN SK-555C

I’d love to wire one of these sites to a physical device with knob to hear the various stations resolve through the static. I miss the serendipty of that kind of radio. Come to think of it I miss serendity in general, but that’s a longer post.