Almost every museum has a private warehousing facility, to hold items that don't fit in its public viewing space or perhaps to hold the originals of works that it doesn't want to risk to the hands of the masses. Jaguar, for instance, calls the secret overflow space it uses for its Heritage Center "Sleepy Hollow.". The $130 million Porsche Museum has 505 cars in its collection, but they aren't all on display at all times.
Autoblog , An inside look at Porsche's other, secret museum, An inside look at Porsche's other, secret museum
