Best travel lens for the pentax k 01?

Here is what the site says about that.

From Pentax K-01: Pentax K-01: A mirrorless camera by Pentax with a 16.3-megapixel APS-C sensor, announced in 2012. Pentax's only K-mount mirrorless camera, designed by Marc Newson, with no viewfinder. Specs - Maker: Pentax - Mount: Pentax K - Sensor: APS-C, 23.5 x 15.6mm, crop factor 1.5 - Resolution: 16.3 megapixels - Stabilisation: in the body - Announced: 2012 - Type: mirrorless camera Focal lengths on it Lenses frame like 1.5 times their focal length ...

From Travel: Travel: A travel camera has to be good at everything and light enough that you still carry it on day five. Landscapes, food, street scenes, people, the inside of a dim church: you'll shoot all of it, often in a hurry, and you won't want to change lenses on a crowded square.

Quoted from this site's pages.