Honey's cofounder just bought a $60 million 'Sky Garden' Bel Air mansion after selling his company to PayPal for $4 billion

The Bel Air home Ruan bought was listed privately.

SAOTA designers said that the home was envisioned as an "expansive garden in the sky." It has 270-degree views of Downtown Los Angeles, the Bel Air Stone Canyon Reservoir, Century City, and the Pacific Ocean.

The house has just about everything: four kitchens with stone and marble finishes, a separate guest house, and even a wellness center with a gym, sauna, and steam room.

Outdoors, the property has an infinity pool, outdoor barbecue and bar.

Hot and cold plunge pools and outdoor lounge areas make the outside as appealing as the inside.