Dhaka, April 27 -- In a city known for cutting-edge trends and technology, weekends in Seoul reveal a very different side-one where bargain hunters trade shopping malls for crowded streets packed with secondhand finds, vintage fashion, and unexpected collectibles.

Across neighborhoods like Sinseol-dong and Dongmyo, thousands of people gather every weekend to explore one of the city's largest informal street markets. Stretching for miles, the sprawling marketplace spills out from the Seoul Folk Flea Market into surrounding streets, where vendors lay out everything from clothes and tools to rare memorabilia and quirky antiques.

The market has become a magnet for both locals and tourists, offering a mix of new and used goods at deeply disc...