Can I walk into Bowles Hall as a nonstudent?

I am a former Bowles Hall resident, and I'm taking my daughter to visit Berkeley over spring break. I'd like to show her around Bowles Hall. Will this be frowned upon? Will there be a security issue or will students not care? I looked up contact info and all I could find was the email for the college principal. I really don't want to bother him with an email.