The Tokyo International Exhibition Center, better known as Tokyo Big Sight, boasts an area of more than 80,000 sq. meters of exhibition space. It's the country's largest convention center and will host wrestling, fencing and taekwondo during the 2020 Olympics.

Not many events can claim to be too big for Tokyo Big Sight, but Comic Market, which is commonly shortened to Comiket, is getting close.

"This summer approximately 590,000 people attended Comiket 84," Naoki Satomi, a publicist for the Comic Market Committee (CMC), tells The Japan Times. His group is in charge of the twice-a-year event for fans of amateur manga (dōjinshi) and anime. The August gathering was the second in a row to see a record-breaking turnout following the one in December 2012, he adds.