Right across the way from Notre Dame Cathedral, Ho Chi Minh City's striking French post office is a period classic, designed by Gustave Eiffel and built between 1886 and 1891. Painted on the walls of its grand concourse are fascinating historic maps of South Vietnam, Saigon and Cholon, while a mosaic of Ho Chi Minh takes pride of place at the end of its barrel-vaulted hall. Note the magnificent tiled floor of the interior and the copious green-painted wrought iron.