Rural areas in the Islamic world have some good remains, which had been left largely undisturbed.
In Spain, some remarkable discoveries (Vic, Cordoba, Barcelona) were made in the 19th century, when old buildings being reconstructed or demolished were found to contain major remains encased in later buildings.
In Rome, Pula, and elsewhere some walls incorporated in later buildings have always been evident.
In most cases loose pieces of stone have been removed from the site, and some such as capitals may be found in local museums, along with non-architectural items excavated, such as terracotta votive offerings, which are often found in large numbers.
Not much remains to be seen, but there were temples at Ulpia Traiana Sarmizegetusa (6),[10] Alburnus Major (2),[10] Apulum,[11] Tibiscum[12] Porolissum[13] and probably Potaissa (suggested by five neighboring altars), as well as other sites.