Berlin is quite famous, I think, for its flohmarkt. Every Sunday the city's crafts people, traders, house-movers and entrepreneurs set up their stalls across the city.
Since arriving the only market that has been mentioned to me is Mauerpark which, on a sunny September afternoon, is a heaving place, full of all sorts (old and new). There are plenty of food stalls to keep you going as you wander its apparently infinite passages, and lots of interesting things and people to entertain you for a whole day. From 3 o'clock (weather permitting) you can also venture across the adjoining field to witness the Bearpit Karaoke, which is certainly a sight to behold.
However, if you want to escape from the crowds and browse with more ease, venture a little south from Mauerpark, to the Arkonaplatz Flohmarkt. The market is much smaller than it's rowdy neighbour and is all antique/2nd hand goods.
As I am currently living 'between homes' I resisted the urge to buy any of the large, 3D plastic shop-front letters available and tried to avoid eye-contact with any of the lovely but reasonably priced 60s furniture. Also available were antique lithographs, vintage toys, retro glasses, furry hats and plenty more besides.
I hope to make a full investigation into all the city's flohmarkts and trödelmarktes over the coming weeks and will report back with my findings (both ethereal and material).
Closest U-Bahn stop for Arkonaplatz: Bernauer Straße (U8), or Eberswalder Straße (U2).
