94. Pierre Gianadda foundation, Martigny (VS)

It is a private museum open to the public since 1978, that includes the Gallo-Roman Museum (located on the ruins of a Roman temple discovered in 1976), the car Museum and a park which displays the greatest sculptures of European famous artists. To make place for new halls, it was decided to not spoil the landscape of the park, so the halls were built entirely underground.