How many people go to the acropolis every year?

Two major cities located on the eastern part of the Mediterranean Sea became powerful trading centers in the Middle Ages and traded with the Mongol Empire They were Genoa and what? How big is a dodgems ride? What is a Carrie lake? How does river slope and volume of flow affect the river sediments load? Where is statue of pig? Where is the Sarah Rose Museum in Sabina Ohio located? What is the gnp in the world now? Where are sea gabions found? How many rows of soldiers are in the Terracotta Army? What is the difec betwn a shingle beach and a sandy beach? How do rainforest's support tribal people? What is dry density of river sand? What is the average temperature of lake Ontario? When did they finish the tower bridge in London? Is sea water potable? What is the world's largest mass of exposed granite that is sometimes called the eighth wonder of the world? How many people came to the Lincoln Memorial when Marian Anderson sang? How many miles is blackburn to thorpe park? What is the air quality on top of mount Everest? What is responsible for circulating air and ocean currents to the right in the northern hemisphere?