St. Michael and St. Gudula Cathedral, Brussels
Dedicated to the city's patron saints, this cathedral has witnessed its fair share of events, from royal weddings and a medieval miracle, to the birth of peregrine falcons in its tower. The cathedral itself is free to visit. It is here that Charles V, heir to a large number of European territories, was proclaimed King of Spain, Napoleon attended a funeral, and where kings and queens have long been wedded.
Some of its sixteenth century stained-glass windows tell the story of the Miraculous Sacrament of 1370, an interesting illustration of the then complex relationships between the Christian and Jewish communities. Admission charges apply to see the treasury, underground crypt and archaeological sites – different areas of the Cathedral open at different times on different days, so check ahead before visiting. Guided tours can be arranged in advance via its website, and don't forget to ask about the family of peregrine falcons who have made their home atop the northern tower.