Markets

Porta Portese – On Sundays from 7am to 1pm, not far from Travestere Apt , a flea market off Piazza Ippolito Nievo that began at the close of World War II and has grown to be one of Europe's premier garage sales with more than 1,000 stall. It runs every Sunday, dawn to lunchtime.
Pickpocket alert: Seriously, hold on to your wallet.
Dress like a Roman without Boutique Prices
San Giovanni is Rome's biggest used and new clothing market. Snuggled up along a stretch of the Aurelian Wall off Via Sannio are the half-covered stalls of the best used clothing and army surplus market in the city. Off Via Sannio, near San Giovanni in Laterano Runs Monday to Friday 10am to 1pm, Saturday 10am to 5pm
Rome's Campo de' Fiori is an outdoor market by morning:
All morning long, the piazza hosts a market of fresh flowers and produce. By noon, all that's left are scraps.
Borghetto Flaminio - One of the most noted of the antiques markets, operating every Sunday in a small courtyard off the Via Flaminia, a few blocks north of Piazza del Popolo.
Piazza della Marina 32, Sundays 10am–7pm.