prickly pear opuntia cacti flower, ancient town of matera sassi di matera in the background

ancient arch architecture background basilicata building cacti cactus calcite cathedral cave centre characteristic church city cityscape destination di drought dryness dwelling europe facade famous flower habitation heritage hill historic history italia italy limestone matera medieval national nature opuncia opuntia pear place plant prickly rock sassi southern staircase steps summer thorn tourist tower town travel wall