query: headquarters_location fandemonium 
supports: Idaho is a state in the northwestern region of the United States. It borders the state of Montana to the east and northeast, Wyoming to the east, Nevada and Utah to the south, and Washington and Oregon to the west. To the north, it shares a small portion of the Canadian border with the province of British Columbia. With a population of around 1.7 million people and an area of , Idaho is the 14th largest and 39th most populous of the 50 states. The state's capital and largest city is Boise. Fandemonium is one of southwest Idaho 's Sci - Fi , Anime , Gaming Conventions , created to bring multi-genre conventions to Idaho . Held annually in Nampa , Idaho at the Nampa Civic Center , the convention takes place during the first full weekend of August . The convention has featured role - playing games such as Dungeons and Dragons and HarnMaster , Cosplay Groups and competitive contests for costume designs , collectible card games like Magic , the Gathering , computer games , and more . Nampa is the largest city of Canyon County, Idaho, USA. The population of Nampa was 81,557 at the 2010 census making it the third-most populous city in Idaho. Nampa is located about west of Boise along Interstate 84, and six miles (10 km) west of Meridian. Nampa is the second principal city of the Boise-Nampa metropolitan area. The name "Nampa" may have come from a Shoshoni word meaning either moccasin or footprint.
candidates: boise montana nampa nevada oregon utah washington
answer: boise