Mallorca

If you only have time for one sightseeing outing, this should be it. Temple Expiatori de la Sagrada Família (Expiatory Temple of the Holy Family) inspires awe with its sheer verticality and, in the true manner of the great medieval cathedrals it emulates, it's still not finished after more than 100 years.

The church was the project to which Antoni Gaudí dedicated the latter part of his life. He stuck to a basic Gothic cross-shaped ground plan, but devised a temple 95m (312ft) long and 60m (197ft) wide able to seat 13,000 people. The completed sections and the museum can be explored at leisure.

Open the same times as the church, the Museu Gaudí, below ground level, includes interesting material on Gaudí's life and other work, as well as models and photos of La Sagrada Família. You can see a good example of his plumb-line models, which showed him the stresses and strains he could get away with in construction. Gaudí is buried in the simple crypt at the far end.