While Italy offers a vast array of landmarks, the more famous attractions tend to date back to ancient Rome, namely the Colosseum, the Forum and the Parthenon. Landmarks heralding from the Italian Renaissance remain popular with today's tourists as well.
Many of Italy's most beloved landmarks still serve a function today, including Florence's Basilica of Santa Maria, Venice's St. Mark's Basilica and St. Peter's Basilica. Services are still held in all three churches.
Summer crowds in Italy can be massive. Make sure you plan your day wisely and visit popular landmarks early in the morning to avoid late afternoon lines. You may also wish to buy tickets to landmarks ahead of time online.
While most open-air landmarks allow photography, many famed sights, particularly museums, do not allow picture taking of any kind. In fact, the Sistine Chapel does not allow photography or talking while inside.
Be aware that some landmarks in Italy, particularly churches like St. Peter's Basilica, invoke dress codes. Exposed shoulders, as well as miniskirts and shorts are not allowed. Visitors wearing such attire will be turned away.