Basilica of the Holy Blood, Brugge (must see)

Built between 1134 and 1157, the Basilica of the Holy Blood is a Roman Catholic basilica located in the heart of Brugge. Known as a place of pilgrimage, it houses a venerated relic of the Holy Blood (basically, a piece of cloth used by Joseph of Arimathea to wipe the blood of Christ after the Crucifixion) brought from the Holy Land by Thierry of Alsace, Count of Flanders. The cloth with the bloodstain was preserved and brought here after the sacking of Byzantine by the crusader army. The church was declared a minor basilica in 1923.

The basilica in Burg square consists of a lower and upper chapel. The lower chapel, dedicated to St. Basil the Great, is a dark Romanesque structure that remains virtually unchanged. The venerated relic is in the upper chapel, which was rebuilt in the Gothic style in the 16th century and renovated in the 19th century in Gothic Revival style.

Tip:
If you visit, the museum is the first thing you'll come to (and there is a small charge); however, the relic is not in there – it is, in fact, on show in the main church, which is free to view. It is also worth checking the official website for special event related to the Holy Blood - the page is well-constructed with 5 languages (English, French, Dutch, Spanish, and German).