The passion for trees and wildlife, which is at the heart of Mehta&rsquos conceptualisation of the Treehouse Resort, is infectious. You can see and feel it in the frenetic way that trees, plants, creepers have taken over the property, wound their way around this cluster of machans atop keekar trees, deep in Rajasthan&rsquos Syari valley. An area once agriculturally barren and covered with shrub vegetation, Mehta adopted it to prove that, with a little care and ecological knowhow, landscapes can be transformed, water tables rejuvenated, ancient migratory paths restored. Thus was born Nature Farms, an eco-realty project, within which Treehouse Resorts is located. Treehouse took on the commercial form that it has quite by accident &mdash when a visitor discovered Mehta&rsquos &lsquopersonal machan&rsquo. (He echoes Corbett&rsquos desire to settle in the trees, as opposed to a house on the ground, and Treehouse borrows considerably from the famous Treetop Hotel in Kenya&rsquos Aberdare National Park, where Corbett lived after he left India.) Mehta started letting insistent travellers stay the night (&ldquofor nature lovers, it&rsquos free&rdquo), but when the e-mails and phone calls and drop-in visitors became overwhelming, he decided to build another treehouse, and another and another. Twenty treehouses later, if you want a weekend nestled in a feathery keekar tree, you still have to book a few weeks in advance.