A few years back, I was lucky enough to spend a night in Copenhagen....a layover on the way back to Atlanta. Armed with Google maps, I walked around for 6 hours, jamming in as many touristy sites as I could....the Little Mermaid, Nyhavn, Tivoli Gardens, you name it But this one caught me by surprise, I asked a local and he told me "Oh, thats the castle". Of course, the castle. I mean, why wouldn't I expect to find a castle in the middle of a big city??.. So, I had make a detour and investigate a bit. Found out it was built in 1606 and was used as a royal residence unitl the early 1700s Unfortunately, it was closed for the night so I couldnt tour it...but the setting sun and the clouds made for a super cool backdrop.