stone and brick passageways and tunnels of the roman circus of merida in badajoz, extremadura, spain

aqueduct day auditorium romans monumental hispania sculpture mediterranean amphitheatre stage rome amphitheater construction famous augusta civilization column temple theater theatre ruin archeology classical columns historical building historic european archaeology spanish outdoor landscape roman antique old heritage history merida tourism monument unesco stone culture travel europe landmark architecture ancient spain extremadura brick passageways tunnels circus badajoz