The top floor is home to such moderns as Georgia O'Keeffe, Alexander Calder and Franz Kline.

ECONOMIST: Art of the Americas

He maintained lifelong friendships with both, and with Alexander Calder and Isamu Noguchi.

FORBES: Magazine Article

Between the Walker Memorial and the Hayden Memorial Library, you can catch a glimpse of Alexander Calder's impressive sculpture La Grande Voile.

BBC: A perfect day in Boston

As well as selling works by 20th-century artists such as Man Ray, Alexander Calder and Keith Haring, Ms. Guinness also commissions contemporary artists to design for her.

WSJ: Join the (Secret) Jewelry Club

Born in Germany, Hessel and his parents immigrated to France in 1924, where they settled into an avant-garde life, hanging out with artists like Alexander Calder and Marcel Duchamp.

NPR: Hessel, France's Surprise Elder Icon, Dies At 95

Alexander Calder became one most recognized artists of the 20th Century, not through the Jungian explorations of the Abstract Expressionists or through the co-opting of everyday images of Pop Artists.

FORBES: Google Doodle: Watch Alexander Calder Move His Own Mobiles

The real appeal, though, is the contemporary sculpture garden that stretches out across the wide lawns, with works by Mark di Suvero, Alexander Calder, Richard Serra and many more lesser-known, but no less thrilling artists.

BBC: The Great Gatsby��s Gold Coast

Four of the iconic BMW Art Cars are making an appearance at Art Basel in Miami Beach this weekend, including the first of the series made by Alexander Calder that debuted in 1975 at the 24 Hours of Le Mans.

FORBES: BMW At Miami Art Basel