Of all the North American states, Texas is widely considered to be the single most attractive for outside investors looking in. And it's not difficult to understand why, with global economists having singled-out cities like Dallas, Austin and Houston as among the world's most lucrative for buy-to-let investors. There's also a hugely strong tourism industry that keeps much of the state alive and kicking throughout the year – the pickings are rich for investors targeting the right areas. Gross rent yields range from a lofty 13.5 per cent in the centres of affluent cities to a still reasonable 10 or 11 per cent in rural areas. House prices are climbing, but for the time being remain generously low – particularly when considered against the potential returns.