Return of the series exploring extraordinary hostelries. Giles Coren and Monica Galetti explore one of the world's most luxurious eco resorts on the small island of Tetiaroa in French Polynesia. Surrounded by a beautiful coral reef and an abundance of marine life, they work alongside staff of the exclusive Brando Resort to serve five-star luxury to guests paying up to £11,000 per a night.

Monica Galetti and Giles Coren visit Jade Mountain, a hand-built hotel in St Lucia where each room has no outer wall and so is open to the ocean view - as well as having its own private infinity pool. Giles finds that room service here is tougher than it seems, and Monica dives for lionfish, which they both serve to guests visiting especially to have their wedding on the beach.

Giles and Monica discover a unique hotel in Kenya where giraffe, guests and staff all co-exist. They then visit the Sasaab Lodge a 6-acre plot set within 82,000 acres of land owned by the Samburu tribe who receive a fee for each guest.

Giles Coren and Monica Galetti head to the foothills of the Swiss Alps to experience a very different type of travel - health and wellness tourism. The Grand Resort Bad Ragaz houses not only multiple restaurants, spas and golf courses but also Olympic-standard sports facilities - and a high-spec clinic boasting 80 medical staff, who offer guests everything from sleep therapy to dietary advice and surgery.

Monica and Giles hop across to Ireland to scale the imposing and ancient ramparts of Ashford Castle. Founded 800 years ago & set in 350 acres, it later became the family home of the Guinness family. With the help of hotel historian, Fintan, Giles discovers that the castle has had a rollercoaster journey through the centuries, sporadically reaching moments of real jeopardy, only to be saved by a turn of events or new owners. As recently as 2011, the hotel went into receivership but was bought in the nick of time and, after undergoing a £50 million restoration, has the ambition to be the best hotel in the world.

Giles Coren and Monica Galetti visit a hotel in South Africa that has been built into a 187-foot tall former grain silo and which also incorporates a museum of contemporary art. They are challenged to wash the building's 96 windows inside and out, and discover how staff have coped with the challenge of keeping the place clean in the wake of the worst drought to hit Cape Town in a century.

Giles and Monica visit Mashpi Lodge in the Ecuadorian rainforest which features a gondola cable car to transport guests through the forest canopy. The pair learn how eco-tourism is saving endangered species.

Giles and Monica join the 9,500 staff working at one of the world's largest hotels. As well as viewing some of the facilities on offer they go behind the scenes to see the parts of the hotel guests never see.

Monica and Giles travel to the self-governing Chinese city of Macau, which is the gambling capital of the world, welcoming millions of Chinese visitors every year. Joining the 6,000 staff of its newest super-hotel, the MGM Cotai, Monica gets special access to The Mansion, a secret VIP world of huge suites where even money can’t buy a stay. Giles flies through the air in one of the world’s most technologically advanced theatres and helps create the floral displays for Chinese New Year.

You're in for a treat. For the first time ever, you're invited behind the scenes at London's most expensive and exclusive hotel. In this unique travel documentary for BBC Select, Monica Galetti and Giles Coren visit the Lanesborough, near Hyde Park. The suites, costing up to $35,000 a night, are often rented for months at a time, and even the cheapest rooms come with a dedicated butler.

Monica Galetti and Giles Coren stay in the city they live in to work at the Shangri-La Hotel, in Britain's highest hotel. Their expectations of a standard business guest experience are blown away by discovering a hotel that makes guests' personal moments special. From bath butlers to marriage proposals, the hotel is a resort for celebrations in the clouds.

If lazily sipping cocktails in the sun is your idea of a dream vacation, then look away now. In this unique BBC Select travel documentary, Monica Galetti and Giles Coren visit Iceland's ION, an adventure hotel levitating out of a dormant volcano. Guests expect the icy experience of a lifetime, exploring lava flows and glaciers. But how do you keep guests safe when a volcano starts erupting?

Rob Rinder and Monica Galetti work at high altitude, 3000 meters above sea-level at a hidden gem of a hotel with Buddhist connections in the remote kingdom of Bhutan.

Rob and Monica travel to the Malaysian rainforest to work at the Datai Langkawi hotel, where monkeys roam free and the soundtrack of forest wildlife is ever present.

Rob and Monica work in one of Europe’s last remaining family-owned 'grande dame' hotels – boasting a deep history and celebrity clientele list right in the heart of the Eternal City.

Giles Coren and Monica Galetti travel to South America to work in Vira Vira, a hacienda hotel that overlooks an active volcano near Pucon, the adventure capital of Chile. Giles and Monica prepare a meal for guests, go trekking through the Chilean forests on horseback and hear how the chef has an abundance of Chilean produce for his recipes. Last in the series.

Get ready to experience luxury, glamor and contemporary chic. If you can find it. As Monica Galetti and Giles Coren learn in this unique travel documentary for BBC Select, Croatia's Grand Park is a design classic that blends into the incredible scenery that surrounds it. Art and high cuisine come with a Croatian edge. But will Monica be able to learn how to clean Europe’s biggest glass window?

Rob Rinder and Monica Galetti work in sub-zero conditions in Lapland as they collect firewood, cook reindeer stew and take cold water plunges at a hotel owned by a Sami family.

Nusfjord Arctic Resort is a 200-year-old cod fishing village in the Lofoten Islands of Norway. Working alongside the dedicated team, Monica and Rob learn to appreciate the difficulties of running a high-end resort in such an extreme environment in this revealing travel documentary. Battling snowy paths, facing huge waves on fishing boats and chasing the Northern Lights is all in a day's work.

Rob and Monica make the journey to Turkey to work at a hotel built into a network of caves, where modern luxury meets ancient history and every room comes with its own surprises.

Rob Rinder and Monica Galetti work at a luxury hotel in Ibiza where cutting edge biohacking therapies are offered alongside cacao ceremonies, inspired by the islands hippy roots.

Genuine Berber hospitality and spectacular views of the breathtaking landscape make to Kasbah Tamadot in the Atlas Mountains of Morocco unique. And as Monica Galetti and Rob Rinder discover in this opulent travel documentary, they also have Sir Richard Branson as their boss! Monica helps the chef source local produce while Rob mucks out the hotel stables and guides guests on a mountain trek.

The astonishing Qasr Al Sarab Desert Resort, deep in a Middle Eastern desert, conjures up many questions. How do you build a luxury hotel in such an inhospitable place? And why? In this envy-inducing travel documentary for BBC Select, Giles Coren and Monica Galetti investigate unmitigated splendor amongst the sand dunes and scorching heat. But how do the staff cope in this harsh environment?

How you deliver a genuine version of Italy in a carefully designed replica? Monica Galetti and Rob Rinder go behind the scenes of Borgo Egnazia, a hotel modelled on Puglia's historical local villages in this travel documentary. Monica makes focaccia for the cherry festival with chef Rocco, while Rob meets the decoration team who work hard to deliver an experience that blends reality with theatre.