HAVANA (AP) _ Baltimore Mayor Kurt Schmoke and the mayors of Knoxville, Tennessee, and Charleston, North Carolina, arrived in Cuba on Monday for a three-day visit to study historic preservation projects in the capital, government sources said.

Schmoke, Knoxville Mayor Victor Ashe and Charleston Mayor Joseph Riley were accompanied by Camille Jones Strachan, vice chair of the National Trust for Historic Preservation.

The trip is Schmoke's third to the communist nation since March 1998. Cuba's national baseball team played exhibition games against the Baltimore Orioles in Havana and Baltimore earlier this year.