Subterranean catacombs under the Jesuit church in Klatovy were built in 1656-1676. Members of the order, as well as notable citizens, noblemen from the surroundings and other benefactors were buried there. Burying in the crypt was ended by the emperor Joseph II's order in 1783.
Thanks to an elaborate system of air circulation bodies in oak coffins were gradually mummified and conserved. The crypt can be visited through the entry on the right-hand side of the church.
References:The ancient Argos Theater was built in 320 BC. and is located in Argos, Greece against Larissa Hill. Nearby from this site is Agora, Roman Odeon, and the Baths of Argos. The theater is one of the largest architectural developments in Greece and was renovated in ca 120 AD.
The Hellenistic theater at Argos is cut into the hillside of the Larisa, with 90 steps up a steep incline, forming a narrow rectilinear cavea. Among the largest theaters in Greece, it held about 20,000 spectators and is divided by two landings into three horizontal sections. Staircases further divide the cavea into four cunei, corresponding to the tribes of Argos A high wall was erected to prevent unauthorized access into the theatron and may have helped the acoustics, but it is said the sound quality is still very good today.
Around 120 CE, both theaters were renovated in the Roman style.