Best free Houston attraction to bring a crush to???

I need suggestions! I want to bring my crush (who I haven’t confessed my feelings to yet) somewhere interesting to hang out at. Somewhere with free admission, off the beaten path and not something off a top 10 best spots in Htown article. She enjoys finding underrated secluded areas that are fun to explore. Bonus if it’s a safe smoke spot too. Maybe something with outdoor art or architecture. I’m willing to go the distance to show her a good time. I won’t make the spot hot either, secret’s safe with me.