Réunion had no people before 1646, so every stone in Saint-Denis is colonial, Creole or migrant. Three days here move from the Jardin du Roi and the cathedral to the lazaret where indentured workers waited, and the tomb the island still fears.
Raised 1735-1746 as the Compagnie des Indes coffee store, this is the oldest building standing on Réunion and has held the prefecture since 1804. Lava-block walls, arcaded galleries and a garden of century palms face the sea front.
Pierre Poivre's acclimatisation garden, created 1764 to grow clove and nutmeg seedlings smuggled from the Moluccas, broke the Dutch spice monopoly. Royal palms, a 19th-century bandstand and the 1834 Palais Législatif close the perspective.
Begun 1829 and consecrated 1832, the cathedral pairs a neoclassical portico with basalt masonry cut by convict labour. Wall plaques name the Creole planter families who paid for it, and the bells were cast in Nantes and shipped round the Cape.
Built 1860 and nicknamed Pointue for its needle spire, this private chapel of the Desbassayns clan sits behind wrought-iron gates on Rue de Paris. Zinc lambrequins, a shaded courtyard and family vaults show planter piety in miniature.
The 1845 bishop's palace became a museum in 1912 when Ambroise Vollard, born in Saint-Denis, sent home Gauguin, Picasso and Rouault works. The colonial rooms with their timber floors are as much the exhibit as the paintings hung on them.
Opened in 1905 by Gujarati merchants known locally as Zarabes, this is among the earliest mosques built on French soil. The green-and-white minaret rises straight out of a shopping street of fabric and spice stores run by the same families.
A complete 1830s Creole townhouse — varangue, guétali pavilion, kitchen block set apart against fire — restored as the heritage centre. Its rooms explain how lambrequins, jalousies and courtyard layout answered heat, cyclones and social rank.
Completed in 1860 in Second Empire style with a clock tower and cast-iron balconies, the old town hall marked the shift from Bourbon colony to administered department. Its facade is floodlit after dark above Place du Général de Gaulle.
Between 1860 and 1935 more than 100,000 indentured workers from India, Madagascar and East Africa were quarantined in these stone sheds before entering the colony. Cells, registers and graffiti survive on the cliff above the landing beach.
Paved with basalt blocks by convicts from the 1730s, this mule road was the only land link between Saint-Denis and Saint-Paul until the coast road of 1963. British troops used it in the 1810 invasion, which gave it its name.
The 1911 grave of Sitarane, a Mozambican-born labourer executed for a string of ritual murders, is repainted black and heaped with rum, cigarettes and candles by people asking favours. Around it lie planter and Chinese merchant vaults.
This 1830s merchant villa, birthplace of prime minister Raymond Barre in 1924, is now a departmental cultural house. Its garden, guétali and service wing show how a single Rue de Paris plot housed owners, servants and business in layers.