It stands at 118 metres (387 feet) or 29 stories tall and was completed in 1978.
In 2009, Iran's natural gas production stood at 116 billion cubic metres.
The office tower stands at 66 metres and has 16 floors.
It covered some 1000 sq.km and stood at 393 metres below sea level in the 1930s.
The building stands at 78 metres and has 21 floors, including the two retail levels.
Standing at 45 metres tall, the building was completed in 1974.
The tower stands at 84 metres (275 feet) and has 20 floors.
It stands at 38 floors, 409 units and 114 metres.
The square structure stands at approximately 20 metres (60 ft) with five stories.
Following its recovery in 1816, it was restored and now stands at more than two metres tall.