Thanks again to all those who took the time to post their recommendations, opinions and advice.
We went to Newport, Rhode Island; driving up motzei Shabbos and returning on Monday.
It was a nice, relaxing one-day-plus getaway and we all enjoyed it.
Sites we went to:
1) The Breakers.
This is the largest and most famous of the Newport Mansions. The building occupies about an acre of land. The level of luxury is unbelievable, and the thought, planning and detail that went into the design are impressive. Just as an example, the bathtubs have four spigots: hot-and-cold freshwater and hot-and-cold saltwater. The rooms and halls are enormous but proportionate. The self-guided tour using the provided headphone-equipped audio devices is well worth the hour or so of your time it takes.
Important notes: No strollers allowed. No indoor pictures allowed.
2) The Touro Shul.
Important notes: No indoor pictures allowed.
3) The Cliff Walk.
This is a scenic paved walking path along the top of the cliffs, portions of which are behind the mansions. The view of the water and the sailboats is fantastic. We brought along binoculars, which were put to good use. The walk itself is about 3.5 miles long.
If you are considering going, keep in mind that motel costs can vary greatly, depending on the season.