Which activities make you lose track of time?

I can’t remember where I took this photo. I think it might have been the Trentham Gardens show gardens?

I lose track of time when I visit (which is not very often). I will try and get a friend to come with me so I can explore a bit further. It takes me a while to walk around  a garden, and I frequently take photos so that I can rest on the way round. I’m slow and not sure so handrails can come in handy. But I love seeing how gardens change with the seasons. But sometimes my progress is glacial! I keep checking my heart points on my phone. They generally stick at 0 because I’m so slow!