Built in the Baroque style, the château was regarded as one of the finest houses in the Caribbean.

[1] The brick-makers, locksmiths, carpenters, stone-trimmers and limekiln builders involved in its construction had been brought from France.

[2] The Château de la Montagne was built in a mixture of the Roman and French Baroque styles,[1] and it was regarded as one of the finest houses in the Caribbean.

There were a number of ancillary structures within the walls, including a church and quarters for de Poincy's workers and servants.

[1] The château had its own water supply, and it was surrounded by extensive gardens full of exotic flowers and plants.