Garisenda, Italy's other leaning tower
Pisa, in Italy's Tuscany region, is renowned for its photogenic Leaning Tower, which snapshot-eager tourists position themselves to "support." But Italy has another leaning tower, the 150-foot high Garisenda, a 12th century structure in Bologna that was recently closed while engineers rush to prevent its collapse. Correspondent Seth Doane looks at efforts to save these historic sites.