When Dyson renovated its new headquarters in a nearly 100-year-old Singaporean national monument, it faced a unique challenge: Everything it added had to be completely reversible. WSJ took a tour.

Cloudy with a high of 79 °F (26.1 °C). Winds from SSE to S at 9 mph (14.5 kph). Night - Cloudy. Winds from SSE to SE at 6 to 9 mph (9.7 to 14.5 kph). The overnight low will be 74 °F (23.3 °C ...