Close-up of a Christian cross inside the Roman Colosseum against a blue sky, erected by the Pope in 2000 to commemorate Christian Martyrs; Rome, Lazio, Italy

arch outdoors day daytime sunlight round urban structure light close up sunny building bright faith christian religious religion landmark large capital imposing history roman backlit architecture buildings arena landmarks dedication italy arches rome archaeology cities city lazio ruins theater theaters theatre tourism downtown symbolic historic rounded shades dedicate stadium amphitheatre amphitheater icon commemorate commemoration damaged shaded circular damage ruin concrete shade structures cropped crosses catholic catholicism oval open air tribute dedicated famous place ancient civilization world heritage site city center exteriors local landmark archaeological architectural exterior copy space low angle beliefs iconic clear sky monuments building exterior international landmark icons tourist attractions martyr theatres attractions destinations belief historical exterior blue sky looking up outside world heritage sites symbol cross place of worship places of worship christianity top attraction stone famous destination ancient travel monument through symbols italian roman catholic color image ancient civilizations arenas stadiums tributes amphitheatres looking through unesco historic & vintage colosseum colosseums old tourist attraction travel destination travel destinations unesco world heritage site international landmarks capital cities national landmark christian faith place of interest roman architecture capital city christian cross dedicates damages christian symbol commemorating commemorates christian crosses amphitheaters national landmarks colour image no people building exteriors part of flavian amphitheatre ancient rome martyrdom old city italian culture open air theater local landmarks martyrs christian martyr brightly lit open air roman culture city centers cropped image roman colosseum places of interest national capital open air theatre lazio region flavian amphitheater ad 70 down town upper section roundish christian symbols open air theatre openair made of stone national capitals country capital capital of country old rome ad 70 70 ce flavian amphitheatres flavian amphitheaters christian martyrdom open air theaters open air theatres open air theatres christian martyrs