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Bitter Orange Trees (Citrus x aurantium) in the Patio de los Naranjos, Seville Cathedral, Seville, Spain
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Architectural Geology of Segovia, Spain, Part 1: The Segovia Aqueduct (ca. early 2nd Century AD)
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Architectural Geology of Segovia, Spain, Part 2: The Segovia Aqueduct (ca. early 2nd Century AD)
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Architectural Geology of Segovia, Spain, Part 3: The Segovia Aqueduct (ca. early 2nd Century AD)
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Architectural Geology of Segovia, Spain, Part 4: The Segovia Aqueduct (ca. early 2nd Century AD)
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Architectural Geology of Segovia, Spain, Part 5: The Segovia Aqueduct (ca. early 2nd Century AD)
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Architectural Geology of Segovia, Spain, Part 6: The Segovia Aqueduct (ca. early 2nd Century AD)
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Architectural Geology of Segovia, Spain, Part 20: San Sebastián Church (12th or 13th Century AD)
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Architectural Geology of Segovia, Spain, Part 21: San Juan de los Caballeros Church (late 11th Century AD)
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Architectural Geology of Segovia, Spain, Part 22: San Juan de los Caballeros Church (late 11th Century AD)
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Architectural Geology of Segovia, Spain, Part 23: San Juan de los Caballeros Church (late 11th Century AD)
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Architectural Geology of Segovia, Spain, Part 24: Santissima Trinidad Church (12th Century AD)
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Architectural Geology of Segovia, Spain, Part 25: Santissima Trinidad Church (12th Century AD)
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Architectural Geology of Segovia, Spain, Part 26: Santissima Trinidad Church (12th Century AD)