What famous buildings are made of marble?

Examples include the Leaning Tower of Pisa, the Taj Mahal, the Parthenon and other ancient greek buildings such as the Temple of Apollo at Delphi. Many of the oldest major Roman buildings were made of marble, but after the invention of concrete, marble cladding or "revetment" became more common in later buildings; meaning that for buildings like the Colosseum the facade was made of marble, but the structure was made of brick and concrete.