A BTS pop-up store has just opened in Seoul's Gangnam district.<br />Naturally such an event has attract thousands of BTS fans or "ARMY" from across the world.<br />Our Lee Kyung-eun is there to check it out.<br />Kyung-eun, I imagine it's absolute chaos there right now.<br />Hi, Mark. Yes, it's bustling with people. I am standing in front of HOUSE OF BTS - a huge BTS pop-up store located in the heart of Gangnam.<br /><br />And as you can see, I am surrounded by a massive crowd, they are all lining up to get into the store.<br />Some of them actually came here as early as 5 a.m. to be the FIRST to get in line.<br />And they are FINALLY starting to filter inside, as the clock hit 10 a.m, and the doors opened.<br />Now, the store takes over an entire building that has four floors, including the basement.<br />The color of the building and main theme of the pop-up is PINK.<br />It is inspired by the cover of the band's latest album, MAP OF THE SOUL: PERSONA, that includes the smash hit "Boy With Luv".<br />Inside, BTS songs are pumping out, including some new remixs of their hit tunes.<br />You can also experience the virtual world within BTS's music videos.<br />And of course, you can buy BTS goods, food, and beverages to your heart's content.<br />Big Hit Entertainment, the organizer and the band's label, previously said they are hoping to create a dynamic, experiential complex for everyone, including BTS fans.<br />I am joined by a visitor who've been lining up for hours.<br />"what time did you come?"<br />"What are you looking forward to the most?"<br />Before coming to Korea, the pop-up store was set up in cities in the U.S., the UK and France in conjunction with the band's world tour.<br />People there described it as being like a mini concert where they sing and dance along together.<br />Also, these are networking places for ARMY from around the world, and we know, ARMY is known for its strong sense of community and loyalty.<br />The organizer says the Seoul pop-store is an upgraded version of the previous ones, and it will be operating for 80 days, much longer than the other ones.<br />Back to you, Mark.<br />