I visited the Steven F. Udvar-Hazy Center National Air and Space Museum in 2017 on a family visit. Here are several picture albums organized into different categories.
Cold War and Later Aircraft
World War 2 and Earlier Aircraft
I posted more pictures from my trip to Virginia and Washington DC in August. This time, they are of the Smithsonian National Zoo.
I was at the Hackers on Planet Earth (HOPE) XI conference two weeks ago. Lots of surveillance cameras around Pennsylvania Station and surrounding buildings in NYC. I mapped a bunch of them and photographed a few as well. You can find them mapped at cctv.masspirates.org.
There are at least two more just out of the picture: