Subterranea of the United States

multilevel bunker-like structures underneath the East Wing and North Lawn of the White House

civilian command facility for the Federal Emergency Management Agency

deep geological repository storage facility which was never used for storage

structure in Washington, D.C.

Amtrak tunnel under Riverside Park in Manhattan, New York City

thumb|The interior of SubTropolis SubTropolis is a business complex located inside of a limestone mine in the bluffs north of the Missouri River in Kansas City, Missouri. It was developed by late Kansas City Chiefs owner Lamar Hunt via Hunt Midwest Real Estate Development, Inc., with the trademarked phrase ''World's Largest Underground Business Complex''.