In Mexico, Nick travels from Los Mochis in Sinaloa to Creel in Chihuahua, witnessing astonishing feats of railway engineering and breathtaking landscapes.
Nick travels north from the Viking capital of Trondheim, stopping for a night on the River Namsen, takes a helicopter ride, meets a Sami reindeer herder and goes swimming in near freezing sea.
From the misty mountains of Sa Pa to the jam-packed city of Hanoi with its five million scooters, Nick discovers a Vietnam that is developing fast and thriving.
Over the course of three train journeys, Nick visits Malaysia, a country of contrasts - high tech, rural simplicity, megacities and virgin rainforest, and culture.
Nick's Alaskan journey begins at dawn in snowy Anchorage and takes him north to the USA's coldest city, Fairbanks, taking in the mighty Matanuska Glacier on the way.
The presenter travels by rail from the extraordinary landscapes of Peru to Machu Picchu, visiting the fourth highest train station in the world and Lake Titicaca en route.
Nick takes in three capital cities: Prague in the Czech Republic, Bratislava in Slovakia and Budapest in Hungary, with a climb up an observation tower, a visit to the Hungarian Railway Museum, and a cruise.
Nick names this adventure The Volcano Express as he is travelling from Mount Vesuvius to Mount Etna on a journey from Naples to Sicily, where a gyrocopter trip goes terribly wrong.
Among the highlights of 'The Transylvania Express' are a visit to Bran Castle (the inspiration behind Bram Stoker's classic novel Dracula), plus visits to a salt mine at Salina Turda and a brown bear sanctuary.
Nick heads to Morocco, where he visits the old medina in capital Rabat; the city of Sale, where he finds out about its piratical past; and takes a tranquil dawn balloon flight.
An entertaining trip through breath-taking scenery in Slovenia and Croatia, from the Alps to the Adriatic. En route, Nick scales rooftops, paddleboards and hunts truffles.