Detail of the octagonal Castel del Monte near Andria, Puglia, Italy, a 13th-century citadel and castle built by Emperor Frederick II. Unesco site.
Size: 2050px × 3207px
Location: Castel del Monte, Puglia, Italy
Photo credit: © AlexMastro / Alamy / Afripics
License: Royalty Free
Model Released: No
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