A London-based cookie company spent 15 months creating a massive gingerbread house for the 2016 holiday season.

Biscuiteer created a gingerbread replica of the late 1800s Waddeston Manor when the United Kingdom's National Trust commissioned the company for the job back in 2015. 

 

Our recreation of the Waddesdon Manor State Bedroom, made completely of icing and gingerbread! See our #gingerbread Waddesdon over on our blog now or visit it in person until March 19th

A photo posted by Biscuiteers Baking Company (@biscuiteersltd) on

Nov 17, 2016 at 8:55am PST

According to House Beautiful, the six-foot-long, entirely edible gingerbread mansion is made up of the following:

• 480 lbs. of icing
• 240 eggs
• 66 lbs. of butter and sugar

The bakers of this holiday masterpiece released a video giving a behind the scenes look at the creation process.