The Salpa Line is a massive line of defensive fortifications approximately 1200 km long that was built in 1940-41 and in 1944 in order to defend the Eastern border of Finland.
The Salpa Line Museum in Miehikkälä is a museum on military history established in 1987 displaying the history of fortification works of the Salpa Line. The permanent exhibition of the museum consists of the exhibition and multimedia shows at the museum cafeteria and of guided tours to the fortifications on the outdoor museum area.
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.