Adelita Market, great second-hand clothing market in Malasaña
Adelita Market is a monthly flea market that takes place at a cultural center in Malasaña called Espiritu 23 (named after its address, c/ Espiritu Santo 23). You’ll mostly find clothes, jewellery and accessories, but you may end up landing on other treasures too. It’s a great Saturday plan — it’s free and in Malasaña, meaning you can grab a beer at any nearby cafe afterwards.
I particularly love this flea market as I always find great items and even got my own stand there once (here’s a full article on Adelita Market).