From one of the Dwell editors, some more ideas for summer fun without chintz (they're not all bb's per se, but all places on the smaller, modern side):

Ace Hotel (Seattle, WA)
www.acehotel.com

Luminhaus (a Rocio Romero-designed prefab in the trees of Virginia)
www.luminhaus.com

Pelican Hotel (Miami Beach, FL)
www.pelicanhotel.com

Sunset Beach (Shelter Island, NY)
www.sunsetbeachli.com

Hotel Valley Ho (revamped-50's hotel in Scottsdale, AZ)
www.hotelvalleyho.com

Sagewater Spa (in Desert Hot Springs, CA, with excellent martinis a few blocks away)
www.sagewaterspa.com


A few perhaps less vacation-prone destinations, but still worthy:

Dome Ridge BB (Kansas City, MO)
www.bbim.org/domeridge.htm

The Inn at Price Tower (Bartlesville, OK)
www.theinnatpricetower.com

Wow, Amara!

Thanks for the great comprehensive list. Wonderful work.

Again, I would love for DWELL to do a feature on getaway/BB/resort type stuff! There's so much to be explored. Looky what I found:

http://www.veniceplace.com/index.htm

See?

Great discussions, thank you everyone for your ideas!