The document compares various characteristics of the Asian and European sides of Istanbul. It notes that the Asian side is generally older, greener, and less developed than the European side. Some key differences mentioned include: - The European side has historically been the center of trade, business, and tourism, so it is more populated and developed with more hotels, malls, and nightlife. - However, the Asian side has nicer coastal areas for recreation and the longest metro line. Crime rates are also lower on the Asian side. - Both sides have international airports, marinas, popular streets, universities and football clubs, though amenities are more concentrated on the European side.