If you commute by train or subway to work, you might be used to the stations all looking pretty similar. Some may feature artwork (city-sanctioned or otherwise), but for the most part, they're plain. There are plenty of nice ones, to be sure, and plenty with historical appeal. But Naples is taking subway stations to the next level. In a revitalization effort led by Achille Bonto Oliva, former director of the Venice Biennale, 14 of Naples' subway stations have been revamped. The 1 and 6 lines of the city's Metro system will feature the work of over 100 artists and...