Each year, thousands of tourists visit New York City and its historic structures such as Grand Central Terminal, Carnegie Hall, and the Great Hall on Ellis Island. Most tourists are not aware that the man responsible for these famous buildings was Rafael Guastavino (1842-1908), a Spanish immigrant who integrated centuries-old construction techniques into modern architecture. Guastavino left his personal stamp on the city. His work—with its great spans of curving, expressive spaces—combines grace with sturdy, enduring construction.