Major Basilicas
There are only five major basilicas, all in Rome:
Minor Basilicas
The majority of basilicas are termed "minor basilicas". Some of these basilicas are also cathedrals (seats of dioceses.)
... 2nd century - 3rd century - 4th century Decades: 190s 200s 210s 220s 230s - 240s - 250s 260s 270s 280s 290s Years: 237 238 239 240 241 - 242 - 243 244 245 246 ...