I work as an environmental engineer that does inspections of industrial, government, and military facilities. Every inspection I get to tour a different place and learn how it works and how things are made. I've gotten to see some amazing places like

-NASA rocket testing sites -shuttered nuclear weapons production processes, -the factory that makes all the flavoring for Dr pepper/potpourri/cherry/fake almond (it's made starting with paint thinner, yikes) -refineries -military bases

It's fascinating to both see how the world actually works, and how stuff is made, the benefits to society/vs costs to society and environment, and every place has its own site-specific culture. I find so many people take for granted how our whole society is so dependent on a few resources, industries, and expert people working together.

I get to use soft skills to interview people and figure out if they are being honest or hiding something, use my engineering and scientific skills to assess sites, and have a mix of inside/outside work.

My work also does some good - helping develop cases to bring to enforcement. My cases have resulted in changes that improve living conditions for people near these sites, the workers at them, or the environment.

Environmental engineering doesn't pay as much as other disciplines like a senior software engineer or something. But it's a good income and the work isn't as subject to boom/bust cycles as other sectors because it's driven by regulations more than profits.