A "golden era" can be referred to as a "golden age," which implies a flourishing period or an abundance of success and prosperity. Another synonym for this expression is a "heyday," which suggests a period of excellence or high achievement. The term "halcyon days" can also be used to describe a time of peace, prosperity, and happiness, often associated with a nostalgic feeling. A "renaissance" is a period of cultural and artistic rebirth, and just like a golden era, it is highlighted by groundbreaking achievements and innovation. Lastly, the term "peak" can be used to describe a period of successful accomplishments and overall peak performance.