No actually it was the Ministry of Foreign Affairs but that was the running joke. Another joke was the Spock doll that the Australian ladies brought with them but he was not permitted entrance because of his pointy ears. Here is everyone dressed up in their cosplay outside. From the right you can see the guys from China dressed up in Sangoku Musso, Finland is doing Trinity Blood, Australia is wearing costumes from Bubble Gum Crisis and Brazil is doing Full Metal Alchemist.
On the far left you can see the 2 girls from SKE48, a group of performers put together by the same person who created AKB48. They will be performing during the intermission of the Championship on Sunday.