Battistero di San Giovanni
The Pisa Baptistery of St. John in the Piazza dei Miracoli in Pisa, Italy. Most famous for the well known leaning tower within the piazza, frankly much of the rest of the place is nice also, including the actual cathedral. The grounds are lovely too. On a warm day you can stretch out in the grass, if you are able to avoid getting run over by all the tourists intent on taking a photo as if they were holding up the leaning tower. I’d personally suggest strolling away from all of that and exploring many of the other things within the piazza, like the baptistery.