Catwalks and Glass Tunnels Tie Together a Verdant Colombian Home

For nomadic software executive Serge Kruppa, home was typically wherever he could hook up to high-speed Internet and a talented team of developers. Since graduating college in Geneva in 1992, the Swiss-born Brit has lived all over the world, doing stints in San Francisco, Budapest, and Mexico City, among other places. But each failed to seduce him enough to put down roots.