staircase

"There are fine plaster ceilings on the floor, there is green and black slime inside on the walls and the staircases," she said.

It stretches up the dual staircase and around a statement chandelier above the foyer—and the installation also features painted butterflies that are displayed on the walls, among the flowers.

Five of those staircases will eventually be fitted together like a jigsaw puzzle to form the show’s iconic barricade where the student revolutionaries fight and die in Act 2.

Jaw-dropping architectural touches inside the home include a sweeping grand staircase, a formal dining room, and an enormous fireplace.

"The staircase was entirely wooden, and there were many people moving upstairs at the time. As the congregants were going, the wooden structure gave way, leading to the collapse," Mr Gebreweld said.