What is it? The life’s work of Catalonia’s most famous architect, Antoni Gaudí.
Why go? To appreciate the nearly 140 years of work that has gone into this (very) quirky basilica. You couldn’t come to Barcelona without marvelling at its contrasting façades, sculpted details and stained glass.
Don’t miss: Though even walking past the building will give you a sense of wonder, you’ll definitely want to head inside to witness all that’s been achieved over the last couple of decades. Plus, check out the crypt, where Gaudí himself is buried.
Discover the best Gaudí works in Barcelona