A wonderful tour! Krombie is so knowledgeable and funny, she carefully curated this tour to showcase the various circles of society that influenced Oppenheimer's upbringing, moral philosophy, and career. We heard about the thriving expat Jewish community on the Upper West Side, along with the intellectual, scientific, and artistic circles that influenced him. Even though this is a relatively new Purefinder tour, Krombie seems like she already has an excellent grasp of material and was happy to answer questions or elaborate further. Highly recommend, looking forward to another tour with her soon!