Gniezno Cathedral was built in the 14th century. Over the centuries , its appearance has changed many times, a chapel was added, and the interior was rebuilt and redecorated.. There are paintings and wall decorations in various styles. The chapels are divided with bars in the style of Gothic, Renaissance and Baroque period. They were built during the 15th-18th centuries. After the Second World War, Gniezno Cathedral was rebuilt and its original Gothic architecture was nearly restored.
There is a silver sarcophagus of St Adalbert inside Gniezno Cathedral as the cathedral is the place where the remains of St. Adalbert have been deposited. His tomb was made of marble and it was later moved behind the main altar. In addition, there are tombstones of two archbishops at the rear part of the temple. On the left, there is the tomb of Zbigniew Olesnicki while on the right there is the tomb of Jacob of Sienna.It is worth noticing the wooden cross from the first half of the 15th century installed in front of the pulpit. Another valuable element is the Roman gate from the early 12th century, placed in the Gothic portal from the 15th century. It is one of the best examples of the art of the Romanesque period in Europe. The tour includes the cellar where you can see the remains of the original, previous cathedral, and tombs of bishops. The monument is open to tourists almost all year round.