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These square pictures represent the twelve signs of the zodiac. From top to bottom, left to right, they are:
Aries, the ram; taurus, the bull; Gemini, the twins;
Cancer, the crab; Leo, the lion; Vigro, the virgin;
Libra, the scales; Scorpio, the scorpion; Sagittarius, the archer;
Capricorn, the goat; Aquarius, the water-carrier; Pisces, the fish.
The water-carrier here appears to be a dual-tailed merman here.
The individual zodiac pictures are also available separately.