Architect Adam Kushner's $20 million Greenwich Village townhouse is a one-of-a-kind property, featuring what is believed to be the tallest private rock-climbing wall in the world. Real Estate ...

Writer and rock aficionado Chris Kalman raved about Index in an article on Climbing.com: "You might imagine the world's greatest crag to be some tufa-dripped wall in Spain, a stalactite-riddled ...