St Louis Cathedral
This complex (which also includes the Cabildo and Presbytère) dates to the late 18th century and dominates the central part of the French Quarter right next to Jackson Square. It has been City Hall and a courthouse, and now forms a major part of the Louisiana State Museum. The Cathedral is well over 200 years old but has been modified over the years, though its Baroque altars and painted central dome remain impressive. The Cabildo holds such treasures as Napoleon's Death Mask, while the Presbytère is home to a huge exhibit that sensitively illustrates the many facets of the city's trauma and subsequent recovery after Hurricane Katrina in 2005.