The demolition of the former Institute of Texan Cultures building downtown was underway Tuesday despite a recent legal challenge from the San Antonio Conservation Society.

The San Antonio Conservation Society is suing to stop the demolition of the former Institute of Texan Cultures building — a key piece of real estate for Project Marvel.

The Texas Historical Commission’s State Board of Review on Saturday unanimously approved listing the Institute of Texan Cultures on the National Register of Historic Places.

The house at 1115 Wyoming, a few blocks east of the Alamodome with boarded-up windows and doors nailed shut, may not look historically significant, but the Historic Design and Review Commission unanimously decided it was.