Centro Ceremonial Indígena de Tibes

Hurricane Eloísa washed away enough topsoil to expose what archaeologists would determine is the oldest ceremonial and sports complex yet uncovered in Puerto Rico. The site — nine ball courts and plazas built by the Igneri and later the Taíno — also holds the largest indigenous cemetery in the region, 186 human skeletons that have told researchers what these people ate, how they lived, and how they died. The museum opened in 1982. The site has been on the National Register of Historic Places since 1978.