A lot of people giving OP a hard time for travelling with his kid.
Look, it's totally fine if you don't want to take your kids travelling with you, but it's not cool to judge others for doing so. Looks like OP's handling it great, and this little girl is having a blast.
I travelled from a young age; my parents took me abroad almost every year from around aged 3 or 4, and sure, I don't remember every detail, but I fully appreciate that I visited those places and I do have memories from our time exploring together. There are places that I'd love to go back to now, as an adult, that I may not have given much thought to if I hadn't visited as a kid.