Short answers, pulled from the story.
Mir Murad built the structure while holding the Darogahship of the Nawarrah Mehals during the rule of Prince Shah Shuja from 1639 to 1647. The original construction date remains disputed among scholars, though tradition claims Mir Murad saw Imam Hussain erecting a taziah khana in a vision.
The exterior blends Mughal and British Colonial architectural traditions with four columns of Doric order supporting the south verandah. Arched windows and decorative merlons called kanjuras appear on the roof to reflect Mughal characteristics within the design.
Mourning continues from the 1st day of Muharram to the 10th day of Safar every year. Religious gatherings occur throughout this period culminating in Ashura with large processions parading through the streets.
The main building occupies an area of about 9,380 square feet. A pond covering 14,544 square feet touches the walls directly to the south serving as the main attraction of the complex.
Sir Khwaja Ahsanuallah Bahadur reconstructed the flat roof after the earthquake of 1897. He also added a verandah to the southern side of the building following this seismic event.