The Bellevue Avenue Historic District is located along and around Bellevue Avenue in Newport, Rhode Island, United States. Its property is almost exclusively residential, including many of the Gilded Age mansions built as summer retreats around the turn of the 20th century by the extremely wealthy, including the Vanderbilt and Astor families. Many of the homes represent pioneering work in the architectural styles of the time by major American architects.

Belcourt is a former summer cottage designed by architect Richard Morris Hunt for Oliver Hazard Perry Belmont and located on Bellevue Avenue in Newport, Rhode Island. Construction was begun in 1891 and completed in 1894, and it was intended to be used for only six to eight weeks of the year. Belcourt was designed in a multitude of European styles and periods; it features a heavy emphasis on French Renaissance and Gothic decor, with further borrowings from German, English, and Italian design. In the Gilded Age, the castle was noted for its extensive stables and carriage areas, which were incorporated into the main structure.