Villa Adriana (Tivoli)

This complex combines elements of the architectural heritage of Egypt, Greece and Rome

Maritime Theatre at Villa Adriana

This postcard arrived from Czech Republic sent by Veronika

Hadrian's Villa (Villa Adriana in Italian) is a large Roman archaeological complex at Tivoli, Italy. 

One structure in the villa is the so-called "Maritime Theatre". It consists of a round portico with a barrel vault supported by pillars. Inside the portico was a ring-shaped pool with a central island. The large circular enclosure 40 metres (130 ft) in diameter has an entrance to the north. Inside the outer wall and surrounding the moat are a ring of unfluted ionic columns. The Maritime Theater includes a lounge, a library, heated baths, three suites with heated floors, washbasin, an art gallery, and a large fountain. - in: wikipedia