Zeyrek Mosque, formerly the Monastery of the Pantokrator, is a large mosque in Istanbul’s Zeyrek district, overlooking the Golden Horn. Comprising two former Byzantine churches and a chapel, it is the city's best-preserved example of Middle Byzantine architecture and the second-largest surviving Byzantine religious structure after Hagia Sophia.
Built between 1118 and 1136, the complex was founded by Empress Irene of Hungary and later expanded by Emperor John II Komnenos. It housed a monastery, a library, a hospital, and an imperial mausoleum. During Latin rule (1204–1261), it was used by Venetian clergy and later restored to Orthodox monks.
After the Ottoman conquest in 1453, it became a mosque and an Islamic school, named after scholar Molla Zeyrek. Over time, the complex fell into disrepair but was restored in the 21st century and reopened for prayer.
Architecturally, the mosque features Middle Byzantine elements, including cross-shaped churches, domes, and polygonal apses. Though much of its rich decoration is lost, fragments of marble, stained glass, and mosaics remain. The nearby Şeyh Süleyman Mescidi may have been part of the original monastery.
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.