Rivalry on the Beltway; Baltimore has more entertainment, but Washington has monuments.(Brief...

For nearly two decades, Natural Products Expo East used Baltimore's convention center for its annual health foods trade show. This year, however, it moved 40 miles southwest, to Washington, D.C.

``You never like to lose business,'' says Carroll Armstrong, president and chief executive of the Baltimore Area Convention and Visitors Association. ``But they outgrew us, and the reason they're going down the road is they're hoping Washington will be as fruitful a destination for them as Baltimore was.''

It's probably inevitable that two great convention cities le