Seoul

Seoul is the location of the Mayhem headquarters in Agents of Mayhem.

Summary
Seoul, a city in South Korea, is the headquarters of Mayhem. It is often referred to as "The City of Tomorrow", due to its incredible technological prowess and advanced economy.

Official Summary
The high-tech city of Seoul, South Korea was hit hard by LEGION’s attack on the world. Still recovering, the City of Tomorrow is rebuilding itself as the center of technology for the entire world–the crown jewel of the Pan-Asian Consortium. And a prime target for LEGION’s next diabolical scheme.