I visited Auschwitz-Birkenau in February of 1995. It was well below freezing and there was some type of ice ball precipitation, perhaps because it was too cold to snow. I was the only person there.

I walked all the way back from the famous entrance gate, along the train tracks, to the monument at the back. The place was huge and imagining people suffering there during that type of weather was especially heartbreaking. I was luckily able to convince the taxi driver to wait for me. I have some black and white photos I took of it somewhere on my shelves. That visit sticks with me more powerfully than almost anywhere else I've been.