Choosing which sights to see in Florence can seem like an impossible task. There are so many different spots to enjoy, and all have to do with the incredible history of the city. The good thing is that they are all located close together, so you can spend however much time needed at each locale before stopping at the next one.
You will definitely want to visit Michelangelo's David. One of the defining works of the Renaissance, it remains a must-see and worth an entire afternoon if you have it. Florence is full of famous works, but perhaps none so famous as this brilliant work of art. Make sure to buy your tickets online a few days in advance!
Another spot you cannot miss is the Duomo. One ticket will give you access to multiple different attractions, so it's worth paying a little bit more in order to see a bird's eye view from either the campenile or the dome itself. The museum is also worth taking some time and enjoying, and the Baptistry is one of the oldest and best tributes to the beginnings of Florence.
Whatever you decide to do, Florence remains one of the greatest cities in the world--and is well-worth your time enjoying.