- 5 BC. A great Roman theatre is built in Carthago Nova (today Cartagena, in Southern Spain), one of the largest in Hispania.
- 5th century. Hispania becomes a Visigothic kingdom. Many Roman theatres are eventually abandoned and forgotten. Across the Middle Ages, houses are built on top of the ruins of the Cartagena Roman theatre.
- AD 1245. A cathedral is built in Cartagena, partially overlapping the remains of the then-unknown Roman theatre.
- AD 1930. Julio Ruiz Alda produces a series of aerial orthophotos covering parts of South-eastern Spain, including Cartagena. This imagery is served today via WMS by the Confederacion Hidrografica del Segura (first screenshot).
- AD 1938. The mentioned cathedral is destroyed during the Spanish civil war.
- AD 1956. The Spanish government produces a massive aerial orthophoto covering the whole country (second screenshot, served by the Murcia regional authority).
- AD 1988. The Roman theatre is accidentally discovered. Newer buildings on it are removed. Archaeological and restoration works continue up until present day (third screenshot).
Blue shapefile: cathedral
Red shapefile: Roman theatre
1930: The theatre is covered; the cathedral is in good condition
1956: The theatre is covered; the cathedral’s roof is gone due to 1936-39 bombings
2007: The theatre is uncovered and is being restored; the cathedral was never restored (there is another cathedral elsewhere)