These 5 Ancient Cities Were Built Underground on Purpose

These 5 Ancient Cities Were Built Underground on Purpose

Learn why some of the most prominent ancient cities were built underground and which ones you can still see today.

Underground Cities In The USA: Exploring Subterranean Wonders

An underground city is a subterranean space that may provide a defensive refuge; a place for living, working or shopping. The largest underground city in the United States is SubTropolis, a business complex in Kansas City, Missouri.  The concept of underground cities conjures images of intricate tunnels, hidden chambers, and a world beneath our feet … Continue reading "Underground Cities In The USA: Exploring Subterranean Wonders" The post Unde…