Small museum of city heritage, crowded with artworks.
La Seu
Huge ornate cathedral, impressive outside and within. It was started in 1229 but only completed in 1601, in mostly Gothic style; Gaudí had a go at improving it but quit in a strop. The Royal Chapel is the resting place of kings Jaime II and III. You can ascend the tower for an extra €15, but it's a lot of steps. The standard ticket includes Museo de Arte Sacro (aka Museu Diocesà), with religious paintings and silverware; this has a separate entrance east.
Church and cloister founded in 1281, in similar style to the cathedral but without the tourist hordes. The Franciscan nuns moved in with the Poor Clares in the 19th century.
Museum of modern art, a branch of the Madrid foundation of financier Juan March Ordinas (1880-1962). Big names on display here include Picasso, Miró and Dalí, and the building is a stately 17th century mansion.
Sa Llotja
Medieval mercantile building with impressive architectural features, near the waterfront. It is occasionally used as event space but stands empty most of the time.
Three-storey collection of 19th-20th century works by artists from the Balearic islands.
"Village" containing replicas of notable Spanish buildings. In season there are artisan shops, restaurants and bars within, and it's an events venue, but it's a bit hollow at other times.