What is the name of the historic mansion in Galveston, Texas, and who built it?

Bishop's Palace is a historic mansion located in Galveston, Texas. It was built between 1887 and 1893 by Walter Gresham, an attorney and politician who served as United States Postmaster General under President Chester A. Arthur. The mansion, which is also known as Gresham's Castle, was designed by architect Nicholas J. Clayton, who is also responsible for many other notable buildings in Galveston.

Bishop's Palace is an ornate and grand example of Victorian architecture, with elements of Romanesque and Renaissance design. The mansion features a variety of impressive features, including a grand staircase, stained glass windows, and intricately carved woodwork. In 1923, the mansion was sold to the Roman Catholic Diocese of Galveston and used as the residence for the bishop for many years. Today, Bishop's Palace is open to the public and is a popular attraction for tourists visiting Galveston.