Built in 1969, now called 555 California

MIRA's facade, twisting up 40 stories, is strikingly original, and is an iconic addition to the San Francisco skyline. Its fanning bay windows pay homage to the city's history and help establish a unique silhouette. Inside MIRA's homes, these windows allow for a new angle on living, with expansive 180-degree views and light that changes throughout the day.[from building's website]