Question: The designer of the Bucksbaum Center for the Arts claims what national heritage?

Context paragraphs:
César Pelli: César Pelli, founder of Pelli Clarke Pelli Architects, is an Argentine American architect who has designed some of the world's tallest buildings and other major urban landmarks.  Some of his most notable contributions include the Petronas Towers in Kuala Lumpur and the World Financial Center in New York City.  The American Institute of Architects named him one of the ten most influential living American architects in 1991 and awarded him the AIA Gold Medal in 1995.  In 2008, the Council on Tall Buildings and Urban Habitat presented him with The Lynn S. Beedle Lifetime Achievement Award.

Australian National Heritage List: The Australian National Heritage List is a heritage register, a list of national heritage places deemed to be of outstanding heritage significance to Australia.  The list includes natural, historic and indigenous places.  Once on the National Heritage List the provisions of the Environment Protection and Biodiversity Conservation Act 1999 apply.

Bucksbaum Center for the Arts: The Bucksbaum Center for the Arts is part of Grinnell College, located in Grinnell, Iowa.  The center was completed in May 1999, and actually contains the old Fine Arts complex.  The center was designed by renowned architect César Pelli.

Hudson River Valley National Heritage Area: The Hudson River Valley National Heritage Area includes the Hudson Valley in the U.S. state of New York from Saratoga Springs south almost to New York City.  The National Heritage Area provides a unified promotional framework for the area's tourist attractions, with concentration on the area's architecture, history, landscape, artistic heritage and environment, as well as interpretation of the area's historical significance in the American Revolution, the Industrial Revolution and its continuing history through the present day.  The Hudson River Valley National Heritage Area was designated in 1996.

Blue Ridge National Heritage Area: The Blue Ridge National Heritage Area is a federally designated National Heritage Area encompassing the twenty-five westernmost counties of North Carolina, which are associated with the Blue Ridge Mountains.  The designation provides a framework for the promotion and interpretation of the area's cultural and historic character, and the preservation of the natural and built environment.  The National Heritage Area includes the North Carolina portions of Great Smoky Mountains National Park and the Blue Ridge Parkway.  Other attractions include Mount Mitchell in Pisgah National Forest, Nantahala National Forest and the North Carolina portion of the Appalachian Trail.  The Qualla Boundary of the Eastern Band of Cherokee Indians is also within the National Heritage Area.  The area's musical heritage and folk craftsmanship are also recognized by the National Heritage Area.

Atchafalaya National Heritage Area: Atchafalaya National Heritage Area is a federally designated National Heritage Area encompassing parts of fourteen parishes along the Atchafalaya River in the U.S. State of Louisiana.  The heritage area extends the length of the Atchafalaya Basin from the area of Ferriday in the north to the river's mouth beyond Morgan City.  The National Heritage Area is divided into four regions: Upper, Between 2 Rivers, Bayou Teche Corridor and the Coastal Zone.  The designation provides a framework for the promotion and interpretation of the area's cultural and historic character, and the preservation of the natural and built environment.  The heritage area designation recognizes the area's unique environment and culture, and its contributions to music, English and French language, literature, and cuisine.

Freedom's Frontier National Heritage Area: Freedom's Frontier National Heritage Area, Inc. (FFNHA) is a federally designated U.S. National Heritage Area located in eastern Kansas and Western Missouri.  This heritage area preserves, conserves, and interprets historic and cultural landscapes pertaining to: the shaping of the frontier, the Missouri-Kansas Border War, and the eduring struggle for freedom.  FFNHA was authorized on October 12, 2006, with the passage of the National Heritage Areas Act of 2006.  The management plan for the heritage area was approved by the Board of Trustees on June 10, 2009, and undergoes official review by the National Park Service to ensure it complies with all components required within the enabling legislation.

National Heritage Council of Namibia: The National Heritage Council of Namibia (NHC) is a government organization in Namibia responsible for historic preservation.  It was created by the National Heritage Act of 2004, which is an act "to provide for the protection and conservation of places and objects of heritage significance and the registration of such places and objects; to establish a National Heritage Council; to establish a National Heritage Register; and to provide for incidental matters".  It is managed by Rev S.M. April.

Abraham Lincoln National Heritage Area: The Abraham Lincoln National Heritage Area is a National Heritage Area in central Illinois telling the story of Abraham Lincoln.  A National Heritage Area is a federal-designated area intended to encourage historic preservation and an appreciation of the history and heritage of the site.  While National Heritage Areas are not federally owned or managed, the National Park Service provides an advisory role and some technical, planning and financial assistance.

Arabia Mountain National Heritage Area: The Arabia Mountain National Heritage Area is a National Heritage Area in the U.S. state of Georgia that encompasses natural, cultural, and historical elements to form a cohesive, nationally significant environment.  The area is due east of Atlanta and spans 40000 acre reaching from the historic commercial center of Lithonia to the Monastery of the Holy Spirit in Conyers, including a number of sites in between, including Panola Mountain State Park, Davidson-Arabia Mountain Nature Preserve, the Mall at Stonecrest, and more.  The Heritage Area was established in 2006, and is coordinated by the Arabia Mountain National Heritage Area Alliance, which includes board members, representatives from the community and local organizations, and staff.

Supporting paragraphs: Bucksbaum Center for the Arts César Pelli
Answer: an Argentine American architect