Feels like part of the "hidden gems" tour. I live in Sweden for 8 years. I've been to an observatory and planetarium. I regularly visited Stockholm. I asked fri

Feels like part of the "hidden gems" tour. I live in Sweden for 8 years. I've been to an observatory and planetarium. I regularly visited Stockholm. I asked friends in arts. Nobody seems to know about this. Kind of embarrassing to find out about the SSS from HN.