Wed Aug 8, 8:26 PM ET

This May 2007 photo shows the sky through the roof in the ruins of the Diocletian's Palace in Split, a UNESCO heritage site. The palace was built in A.D. 293 for the Roman emperor. Located east of Italy across the Adriatic Sea, Croatia expects over 200,000 American visitors this year — nearly double the number that arrived in 2005. (AP Photo/Sheila Norman-Culp)

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