bell tower and distinctive red brick exterior of the basilica of saint-sernin, toulouse, france

red brick exterior distinctive basilica basilique saint sernin eglise church toulouse france abbey saturnin romanesque sculpture architecture style unesco world heritage site route santiago compostela imposing bell tower trail james relic important stop pilgrimage roman catholic building monument capital occitan designated bishop religious saint-sernin built 11th century house relics saturninus latin one best-preserved largest churches 1998 routes france world french tourism tourist attraction landmark religion roman catholic st-sernin saint sernin