Saint Paul, Minnesota, history includes Prohibition gangsters and speakeasies including the Wabasha Street Caves. See “Castle Royal” or take a driving tour.
The Mendenhall Glacier & ice caves and Nugget Falls are situated in Juneau, Alaska, which you can only visit by air, or an Alaska cruise ship or Marine Hwy ferry.
Halter Ranch Winery, California, offers visitors lots of experiences, from an Excursion tour through the vineyards to a barrel cave tour to wine tasting.
Craters of the Moon Monument & Preserve provides an opportunity to explore 13,000 years accumulation of lava flows, craters & tubes from easy paved walks.