The phrase "executive mansions" can be replaced with several other similar terms to convey the same meaning. For instance, the term "presidential residences" can be used to describe the executive mansions of a country's leader. Other synonyms for "executive mansions" include "government residences," "official estates," "state houses," and "political palaces." Depending on the context, other related phrases such as "head of state housing" or "headquarters of power" may also be appropriate. Ultimately, the choice of synonym will depend on the tone and specific situation being addressed, but there are many effective alternatives to the phrase "executive mansions".