TRAILB_160610_544
Existing comment: 8ยข MORRO CASTLE STAMP ART
(SAN JUAN 450TH ANNIVERSARY ISSUE)
The first national park in a U.S. overseas territory, San Juan National Historic Site was established in 1949. A postage stamp celebrating the site was released in 1971. During the 16th century, Spain built Morro Castle to protect San Juan and its harbor.
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