Philippines

The Philippines (フィリピン), officially the Republic of the Philippines is an archipelagic country in Southeast Asia. It is in the western Pacific Ocean and consists of 7,641 islands.

Background
The Humanity's Wisdom Headquarters (人類の英知総本山) is located in Davao, Philippines.

Toaru Majutsu no Index Light Novel Volume SS2
On the Second Friday of October, Misaka 10090 was one of the Sisters sent to Gemstone Mining research organizations around the world. She was sent to Davao, Philippines, at the Humanity's Wisdom Headquarters, to destroy the facilities and rescue the gemstone there. During her periodic progress report, she had just discovered an escape boat and was en route to take care of it beforehand.