Some of Karachi's most iconic buildings are at risk as the population booms around them.<br /><br />This means safeguarding old buildings, many considered as landmark and iconic, are not a top priority for city planners.<br /><br />But a small, but determined, group of people are trying to save the city's architectural heritage<br /><br />Al Jazeera's Imtiaz Tyab reports from Karachi.
