Shelter magazine Elle Decor is celebrating its 30th anniversary by debuting the “House of Elle Decor” in partnership with the 108 Leonard St. condo in Tribeca.

The publication installed a designer showcase in the building’s $12.1 million penthouse.

Built in 1894 by McKim Mead & White, the landmarked, Italian Renaissance property was a former courthouse and, before that, the New York Life Insurance Company’s headquarters.

It has been restored and converted to 160 condos with Elad Group as majority developer.

Sales there launched in March 2018; units currently start at $1.67 million for a one-bedroom, 1½ bathroom.

Elle Decor’s editor-in-chief Whitney Robinson tapped designer Neal Beckstedt to decorate the penthouse. The 4,141-square-foot unit comes with three bedrooms, three full bathrooms and a half bath.