Daniel Kruel is used to wandering through ancient Babylon. The unusual sculpture is one small reminder that Babylon was once a seat of architecture, culture, and learning – as the Greek historian Herodotus put it, “in magnificence there is no other city that approaches it” – even though it would also earn a reputation for sin and godlessness with its Tower of Babel. A graduate student in urban planning at the University of Florida in Gainesville, Kruel is occupying a virtual Babylon using a technology that is rapidly becoming a tool for organizations such as the New York-based World Monuments Fund, a nonprofit dedicated to the conservation of cultural heritage.