#1 Stick with comfy shoes
When it's raining cats and dogs outside, especially in a cobblestoned city like Firenze or almost any other ancient European city, you might want not to dampen your feet in huge puddles and slippy stairs. A pair of rainboots, no matter if they're high or lower booties (like the ones I got here at Bata, which have turned into my best friends), are a nice and comfortable solution not only to step comfortably in any situation you might get in, but also, a different way to match your outfits while visiting any museum during rainy season. Avoid in any way high heels, flip-flops or similars. You don't want to slide off!

#2 The less things you carry, the better
No one likes to enter into a museum packed with people carrying around the camera, bag, coat (because it's damn warm when you get inside any building), shopping bags, selfie stick (although they aren't allowed in many museums and places anymore, though) and stuff in your hands. Instead, get a comfortable shoulder bag or tiny backpack with the basics to stroll around, so you can hold the camera comfortably and avoid undesired attention of pickpockets.

#3 Layering
Once you get inside any museum or archeological site or cultural building, you'll notice the temperature change in comparison to the exterior. My advice here when visiting a museum in a fashionable and comfortable way is wearing different thin layers to finally culminate in a thick pullover or blazer + outerwear. This way, you'll only have to take off the pullover or sweater and knot it around your waist, so your hands with get a bit extra free without carrying tons of things. Besides, once you step out the place to keep your route, it will be much easier to put it all over again.

#4 Shoulder bags are your best friends
Again talking about freedom, shoulder bags and mini backpacks shall be your best friends not only when visiting any museum, but also when doing tourism through any city. My advice here is that you don't need a ton of things to go soak yourself in hundred of years of culture: you just need your senses and maybe an smartphone with incorporated camera. Fancier accessories are just addons which will only make your visit a little bit more complicated due to crowds, lines and bag controls.

#5 ... so are pocket umbrellas
And last but not least... Have you ever visited any museum while carrying a huge umbrella? If not, I assure you it's the most uncomfortable thing E-V-E-R. Don't get into any more trouble and get yourself a pocket umbrella which will dry up in seconds and which you can fold into your bag or hang in your wrist while visiting. No more tripping over other visitors with this huge and inconvenient accessory!