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Grand palace from 15th century but rebuilt in the 18th, this now houses temporary exhibitions and is not otherwise open. Its Chapel of St John the Baptist sometimes hosts concerts.
Basílica-Santuario del Sagrado Corazón de Jesus
Ornate OTT church built 1918-22 in a mix of Neo-Gothic and Modernist.
A working-class housing block, named for the fellow who built it in 1877, and inhabited until 1960. It's now a museum, with one house furnished in period. Folk here lived in cramped conditions, with a single window to each house.
Steam, diesel and electric locomotives and shunters and other rolling stock, mostly from Asturias' industrial heyday of coal and steel. The steam locos are occasionally fired up and haul rides, but it's just for 100 m up and down the siding. Plus a library and resource on Spanish railways, and model railways.
The aquarium has 60 different habitats of fresh and salt water.
Exhibiting the work of post-impressionist painter Nicanor Piñole (1878-1978). The building of 1902 was originally a school for under-privileged children.
Extensive display of Atlantic plants.