TV Documentaries for Now Saturday 11 in Channel 5

With privileged access and insightful input from experts, we explore one of Britain's finest stately houses, steeped in royal intrigue and indulgence, and also now a must-have film location.

Alexander visits the Hoover Dam, Vegas and Utah, uncovering engineering marvels, neon legends and Mars missions - before taking on a daring desert canyon rope swing.

Exploring how a future King William may shape and redefine the monarchy when he is crowned, and assessing the challenges he faces, trying to ensure the Crown remains relevant in a modern world.

Exposing the high-profile trial that pit the Crown against Paul Burrell, one of its most recognisable servants, accused of stealing hundreds of royal items. Was he loyal butler or thief.

This show features first-hand accounts from people whose train journeys went off the rails - from extraordinary obstructions to terror on the tracks.