They gradually developed into more elaborate and grand structures in the following centuries.
Under Roman influence theatres gradually became the permanent buildings with an indoor stage and auditorium that we are now familiar with, more than 2,000 years later.
Since then they have had a child, Ray, 73, two grandchildren and three great-grandchildren, as well as seeing 17 Prime Ministers come and go.
The long-forgotten underground city of Samen has rich history and more discoveries are expected in the near future, as researchers continue to dig at the site.
The underground city of Same is located 400 km (250 miles) west of Tehran in Iran.
Several ancient underground relics were accidently discovered during a construction project in 2005 and archaeologists have been excavating here ever since to find out if there are more ancient treasures buried underground.
The underground city is estimated to be about 2,000-year-old, dating to the period between the fall of the Achaemenid Empire (550-330 BCE) and rise of the Parthian Empire (247 BCE-224 CE).
A Perth-based Instagram model has thousands of women fawning over her 'perfect' bubble butt.
Madalin Giorgetta Frodsham, 28, says her toned derriere is the result of a six day a week glute workout.Examples include weighted hip thrusts and glute bridges, cable pull-throughs and cable kickbacks.'Pumpers are low intensity exercises and you’ll need 1 day rest between pumpers.Example include bodyweight squats, resistance band glute bridges and resistance band crab walks.'Ms Frodsham also consumed more calories to help feed her expanding posterior.Scroll down for video She divided these exercises into stretchers, activators and pumpers.'Stretchers are high intensity exercises and you’ll need between 3-4 days rest between activators.Examples include weighted squats, deadlifts and lunges,' she wrote.'Activators are moderate intensity exercises and you’ll need between 2-3 days rest between stretchers.They also hypothesise that there was a fourth line that has since been lost.