Bologna, Italy
Bologna is the largest city (and the capital) of the Emilia-Romagna Region in Northern Italy. It is the seventh most populous city in Italy, located in the heart of a metropolitan area (officially recognised by the Italian government as a città metropolitana) of about one million. The first settlements date back to at least 1000 BC. The city has been an urban centre, first under the Etruscans (Velzna/Felsina) and the Celts (Bona), then under the Romans (Bononia), then again in the Middle Ages, as a free municipality (for one century it was the fifth largest European city based on population). Home to the oldest university in the world, University of Bologna, founded in 1088, Bologna hosts thousands of students who enrich the social and cultural life of the city. Famous for its towers and lengthy porticoes, Bologna has a well-preserved historical centre (one of the largest in Italy) thanks to a careful restoration and conservation policy which began at the end of the 1970s, on the heels of serious damage done by the urban demolition at the end of the 19th century as well as that caused by wars. An important cultural and artistic centre, its importance in terms of landmarks can be attributed to a varied mixture of monuments and architectural examples (medieval towers, antique buildings, churches, the layout of its historical centre) as well as works of art which are the result of a first class architectural and artistic history. Bologna is also an important transportation crossroad for the roads and trains of Northern Italy, where many important mechanical, electronic and nutritional industries have their headquarters. According to the most recent data gathered by the European Regional Economic Growth Index (E-REGI) of 2009, Bologna is the first Italian city and the 47th European city in terms of its economic growth rate. Bologna is home to numerous prestigious cultural, economic and political institutions as well as one of the most impressive trade fair districts in Europe. In 2000 it was declared European capital of culture and in 2006, a UNESCO "city of music". The city of Bologna was selected to participate in the Universal Exposition of Shanghai 2010 together with 45 other cities from around the world. Bologna is also one of the wealthiest cities in Italy, often ranking as one of the top cities in terms of quality of life in the country: in 2011 it ranked 1st out of 107 Italian cities. More information is available on Wikipedia
This week our Landsat 5 and 8 imagery tour of the major cities in Europe stops over Bologna. This city in northern Italy, the capital of Bologna Province and Emilia-Romagna Region, is situated on a fertile plain at the foot of the Apennines. The purpose of this image comparison, using images acquired in a time window of twenty-seven years, is to show the urban differences in and around the city. The comparison shows a little development around the city, especially in the north part and near the airport, which was renovated during this time window. Another aim of these images is to promote the opportunity to download Landsat data through the ESA portals, where images captured every day are made available in near real time to the users and the scientific community. Landsat full resolution data products are freely available for immediate download at:  View Landsat 5 TM high resolution image (JPG 4.9 MB) View Landsat 8 OLI high resolution image (JPG 5.7 MB)
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