CNN) -- Glynis Freeman stands on a tower balcony in nighttime London, peering down at the dizzying lights hundreds of feet below.
The distant rumble of city traffic rises up from the streets. A gust of wind brushes her hair. Freeman smiles while swiveling her head in all directions to take in the view.
"That was cool," she said a few minutes later. "I want to go back to London."
That's because Freeman was never physically in London. The Marietta, Georgia, woman was 4,000 miles away in an Atlanta hotel lobby, wearing a headset and trying out a demonstration of new technology that can place people in exotic virtual settings almost anywhere on the planet.