Atlas Obscura

Atlas Obscura is a website that catalogues unusual, obscure and lesser-known places around the world, from hidden landmarks to curious museums and out-of-the-way natural sites. Readers use the site to discover offbeat travel destinations and to read feature stories about the history and character behind each place, and it also organizes trips and events tied to its coverage for readers who want to visit in person.

Its ads.txt file lists 156 ad systems, 104 selling ad spots directly and 105 through resellers. Sales houses named include AdApex.io, Freestar LLC, Gourmet Ads, Seedtag Advertising SL and MISSENA.