This neo-Romanesque fairy castle was constructed in 1891. In 1933, it was expanded with a northern addition that perfectly matched the original style. The older section remains a bustling post office in Downtown Brooklyn, catering to the needs of many. Meanwhile, the newer wing is home to the United States Bankruptcy Court for the Eastern District of New York.
Source - https://en.wikipedia.org/wiki/Federal_Building_and_Post_Office_(Brooklyn)