Coloma castle was built around 1515. It is a square building with square corner towers and a pear-shaped roof and surrounded by a moat. The castle has been completely restored and serves as a municipal cultural center. In the castle park are some interesting buildings such as the former carriage house of 1731 (now a cozy tavern) and a garden pavilion with stair tower. The Rose Garden of Coloma is the largest in Europe. The garden has an area of 15 hectares.
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.