© Der Spiegel
The city of Venice absorbs 20 million tourists each year. In addition, rising water levels have meant an increasing number of floods each year. A new barrier aims to keep Mother Nature at bay, but Venice faces an equally big problem: Its population is shrinking dramatically as Venetians flee the city.
=> An excellent article on how tourism (among other things) can damage a city. Read the whole article in the English version of Der Spiegel