Rates start at $55 per night.
The Oregon museum of science and industry is one of the nation's leading science museums. It features the U.S.S. Blueblack submarine. It's a retired U.S. navy submarine, which is open for sleepovers. You can sleep in the bunks, eat in the galley and play in the engine room.
It's terrific for kids who are into the sea. They also have kids-only sleepovers.