Dumfries Museum and Camera Obscura is the largest museum in the region. The museum has extensive collections relating to local and history from the pre-historic era. The museum also has the world's oldest working Camera Obscura. Admission is free, however a small fee applies for the Camera Obscura.
The museum's collections cover all material relating to the natural history and human pre-history of the region, from geology to dress, folk material, archaeology and early photographs. Notable artefacts include for example a cast of the skull of Robert the Bruce, Bronze Age cist burial including the remains of a 35-year-old man from the beaker people and a large collection of Roman and Celtic stone crosses and funerary monuments.
Originally built as a four-storey windmill on Corbelly hill, the highest point in Maxwelltown, in 1798, the site was purchased by Dumfries and Maxwellton Astronomical Society in 1834. Over a two-year period the tower was converted into an Observatory, and with advice from polar explorer Sir John Ross, a telescope was purchased from a Mr Morton of Kilmarnock. With its completion in 1836, unfortunately the observatory missed the arrival of Halley's comet; however, it was used in this role until 1872.
The camera obscura is currently the oldest working example in the world, and has been in continuous operation since 1836. The instrument, based in the top level of the windmill tower, offers a complete 360° panorama of the surrounding landscape. The image is projected onto a focusing table below, and operated using a simple rope mechanism. In order to protect the instrument it is only operated during the summer months and on days when weather conditions are clear.
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.