Compared to Prague , Rome , Vienna , and Split , Venice is a tourist trap. The city is made up of a collection of 100+ islands. Bridges connect most of them, and you can walk throughout the city. All the public transport is using water buses called Vaporetto . A single trip costs 8 Euros. If you are planning to use Vaporetto, buy a 24-hour pass worth 20 Euro which covers unlimited trips on Vaporetto.
Start your day with a walking tour which will give you a good understanding of the history of the city. After the walking tour, visit St. Marks’s Basilica and the square next to it. St. Marks is the patron saint of Venice. There is no entrance fee for the basilica; there is a fee for its treasury and the top floor though.
The pigeons on the square love eating food from one’s hands. So, carry something small like chips to feed them.
Then head to the Leonardo Da Vinci Museum. It is less of a museum and more of an interactive science exhibition of his work. I still loved it and would recommend it for science fans.
Next to it is the Ponte dei Pugni bridge where traditional annual fistfights used to happen.
Head to Rialto Bridge afterward, the most prominent bridge in Venice.
From there, check out the “Libreria Acqua Alta”.
If you like, use Vaporetto to head to Murano for glass blowing demonstrations. I skipped it.