The first challenge for the 10 amateur miniature-makers is to create miniature busts of themselves, before being split into teams to design and make a Regency-themed dining room, complete with tiny food.
The nine remaining miniaturists tackle art deco design, working against the clock to create miniature toiletries befitting a 1920s bathroom. The two winners of this first challenge will lead the next test - building the bathroom itself, which must include a bath with running water.
The eight remaining miniaturists channel their inner child to create a Victorian nursery containing a pram, a puppet theatre, a rocking horse and a doll's house replica of the mini mansion
The remaining miniaturists tackle an Elizabethan bedroom as they create a bed, fireplace, writing desk and musical instrument.
The remaining miniaturists make a Rococo hallway complete with an accessory for a Masquerade Ball, mural, console table and chaise longue.
The remaining miniaturists make an Edwardian games room complete with a playable tabletop game, billiard table, display cabinet and indoor plant.
It's the semi-final and the four remaining miniaturists create a Georgian kitchen complete with a full range, mangle and an array of accessories and items to fit in a dresser.
In the final round, the miniaturists create a statement period piece before designing their dream room for the mini mansion.