In Episode 4 of the show, Efron tells co-host Darin Olien that he has “gotta get out of Hollywood,” saying that living there is “not conducive [to a] long, happy, mentally-sound life.” On his journey to find a better life, he visits Iceland, Costa Rica, Sardinia, London, and a number of other locations.

Episode 1: “Iceland”

Synopsis: “In between getting an up-close look at Iceland’s renewable energy efforts, Zac soaks in a spa with Darin, samples reindeer and views natural wonders.”

Locations visited:

LaugarvatnSandvikOmnom Chocolate, ReykjavikGullfoss FallsLjosafoss Power StationDill Restaurant, ReykjavikResource Park: Blue Lagoon, Grindavík

Episode 2: “France”

Synopsis: “Before heading to Paris to learn about its tap water system, Zac joins pal Anna Kendrick for a lesson in H20, courtesy of a water sommelier in L.A.”

Locations visited:

Le Petit Ermitage, West Hollywood, CAThe Channel TunnelCalaisParisL’Usine d’Eau de ParisSanctuary of Our Lady of Lourdes, Lourdes

Episode 3: “Costa Rica”

Synopsis: “Zac and Darin try out life at a swanky eco-village committed to a small environmental footprint, visit a wildlife refuge and enjoy a ziplining trip.”

Locations visited:

La Ecovilla, San MateoTerraventuras Nativo Zipline, Puerto Viejo de LimónPunta Mona, Limón Province

Episode 4: “Sardinia”

Synopsis: “On an island that boasts a notable number of centenarians, Zac rethinks his view on nutrition as he ponders how the locals live such long, healthy lives.”

Locations visited:

Village of SeuloVillage of AritzoSardinian countryside

Episode 5: “Lima”

Synopsis: “Following a crash course in apple growing, Zac and Darin head to Peru to delve into potato cryopreservation, biopiracy and the sport of sandboarding.”

Locations visited:

Angry Orchard, Walden, NYInternational Potato CenterCentral Restaurant, BarrancoSurquillo Market, SurquilloChilcas District

Episode 6: “Puerto Rico”

Synopsis: “In the devastating wake of Hurricane Maria, Zac explores sustainability in the region, where he meets chef Jose Andres, milks a goat and eats ceviche.”

Locations visited:

Port of San JuanCantera, San JuanFrutos Del Guacabo, ManatíCaribe Hilton, San JuanCasa Sol Bed and Breakfast, Old San JuanCocina Abierta, San Juan

Episode 7: “London”

Synopsis: “After a beekeeping stop on a New York City rooftop, Zac checks out London’s pollution-reduction efforts, from wall gardening to trash collecting.”

Locations visited:

New York Hilton Midtown, New York, NYThe London EyeLondon School of EconomicsArcelorMittal Orbit, Queen Elizabeth Olympic ParkRiver Thames, RainhamDeliciously EllaAulis London

Episode 8: “Iquitos”

Locations visited:

Down to Earth with Zac Efron is streaming now on Netflix.