The world is not flat, Google hasn’t yet mapped everything, and there are yet places in the world that don’t take your AmEx card. Atlas Obscura: An Explorer’s Guide to the World’s Hidden Wonders is the immense catalog of the world’s curiosities, from the rainbow river of South America to the medical device museum in Minnesota. On The Gist, editors Dylan Thuras and Ella Morton of Atlas Obscura explain their taxonomy of awe-inspiring sights.In the Spiel, the return of the Trump Anxiety Hotline.Today’s sponsors: The Girl on the Train, in theaters Oct. 7.Upstanders, a new podcast from Starbucks CEO Howard Schultz and Rajiv Chandrasekaran. Hear stories of ordinary people doing extraordinary things to create positive change in their communities. Listen and subscribe to Upstanders on iTunes starting Sept. 7.  Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at slate.com/gistplus.  Learn more about your ad choices. Visit megaphone.fm/adchoices