If you're heading to the 3 Days of Design festival in Copenhagen soon, we're guessing your schedule is already packed with exhibition visits and design aperitivos. But there's also a good chance that, if you're anything like us, you always carve out at least a little time for mandatory design sightseeing, too? With Scandinavia being a goldmine for mid-century anything, it's definitely folly to go to a place like Copenhagen without digging for architectural gems, and this year, we're making it...