Depending on definition used, there are approximately 200 amphitheaters in the Roman world. While this document does not include data for all of them, it is probably a meaningful sample.

The original data used to compile these charts and tables is available at https://github.com/sfsheath/roman-amphitheaters . It is available there in the following formats (some of which may lag the geojson file):

The PURL URI http://purl.org/roman-amphitheaters redirects to the geojson version, which is canonical for the time being.

Summary statistics as produced by R’s summary() function.

##     capacity        extmajor        arenamajor      elevation     
##  Min.   : 1000   Min.   : 70.00   Min.   :30.00   Min.   :-121.0  
##  1st Qu.: 8000   1st Qu.: 94.25   1st Qu.:54.50   1st Qu.:  33.0  
##  Median :15000   Median :117.80   Median :66.00   Median :  99.0  
##  Mean   :15857   Mean   :118.96   Mean   :61.86   Mean   : 189.2  
##  3rd Qu.:20350   3rd Qu.:135.75   3rd Qu.:71.50   3rd Qu.: 264.5  
##  Max.   :50000   Max.   :189.00   Max.   :83.00   Max.   :1170.0  
##  NA's   :120     NA's   :153      NA's   :151                     
##    longitude     
##  Min.   :-8.493  
##  1st Qu.: 2.947  
##  Median :10.866  
##  Mean   :10.451  
##  3rd Qu.:14.564  
##  Max.   :40.729  
##