What's it like to work in The City of London?

I am thinking of possibly working in The City, either in Investment Banking, asset management, or anything else really that I can do with an economics/finance degree (I am still a bit confused). What do you guys say it's like? I hear that investment banking is extremely stressful, you're not in a nice environment and have little to no personal life. However, I know that there are other jobs in The City, too, that I'd like to explore. I preferably want a job that I enjoy, however, that does pay a very large amount, when you're at the top of your career (six-figure salary).

Let me know your thoughts!