Les Olympiades is a raised concrete platform with eight tower blocks standing on it, and it holds the largest Asian quarter in Paris. Shops and walkways sit on a slab ten metres above the street, cars and deliveries run underneath it, and each tower is named after a city that has held the Olympic Games. The city built it between 1969 and 1977, as part of a plan to rebuild the whole district in towers. Then the property market fell. The flats did not sell, and the scheme was judged a failure before it was finished.
What saved it was who arrived next. From 1975, war and the Khmer Rouge drove refugees out of Vietnam, Cambodia and Laos. Many of them were ethnic Chinese. The unsold flats here were cheap and available at exactly that moment. Families bought them, opened shops on the slab and in the avenues below, and turned a failed piece of planning into a working quarter. A Buddhist temple sits in a former car park under the concrete, reached down a ramp between parking bays. The New Year parade through these streets in January or February is the largest in France.