Berlin, the City of History.
Boy, where do I even start? Berlin compared to my city of San Francisco makes SF look like a small country-side town. I spent 5 wonderful days in Berlin and still had so much I wanted to do. Being a History minor, my inner geek shined brighter than that of a thousand suns- okay, well maybe that's a bit of an exaggeration, but I did get my fix on this trip. From the Sachsenhausen Concentration Camp and Memorial to the Prussian Palaces in Potsdam.. I just couldn't get enough.
Insider Tip:I suggest looking at an alternative to exchanging currency (for non Euro travelers) either before your arrival or have somewhere in mind after- the one exchange place in Tegal is horrendous. For transit, if you plan on using it, look into the Welcome card and also have a map or an app handy. For museums, get the Museum pass (got mine at the Humboldt Box) if you're staying more than 3 days. Be safe and dress warmly!