Topham Hall (T&F)/Behind the Scenes

The Railway Series
Topham Hall is a fictional mansion in the town of Wellsworth of the Island of Sodor, created by the Reverend W. Awdry. It serves as the home of Sir Topham Hatt and Lady Hatt.

Topham Hall only appeared in The Railway Series book Toby the Tram Engine, which was published in 1952.

Interior:

Gauge 1 model
While the interior frequently appeared in series prior, Topham Hall's exterior first appeared in the ninth series of the television series.

Close-up models
Close-up models of the mansion was built to be used for scenes involving the close-up scale figures.

CGI model
In 2009, the series introduced Computer-Generated Imagery (CGI) as a replacement for the show's long-standing live-action models. Topham Hall was recreated from scratch in CGI by Nitrogen Studios. The model was "hand-sculpted" in Maya, a 3D animation and modelling software.

According to Greg Tiernan, the CGI models are subjected to many rounds of review before they are submitted to HiT Entertainment for final input and approval.