Artist and filmmaker John Akomfrah’s multi-screen film installation Vertigo Sea is an epic meditation on mankind’s relationship with the watery world. Exploring themes of migration, environmental destruction and slavery, it was one of the most talked about works at last year’s Venice Biennale. Now at Bristol’s Arnolfini, the location couldn’t be more fitting. Housed in an old warehouse, the gallery is just a stone’s throw from the city’s floating harbour, near where, three centuries ago, ships arrived laden with human cargo.

“Finding the Light”, the second episode of this four-part series, took us to the period when Scottish intellectuals led the world in innovative and revolutionary thinking, Edinburgh’s neo-classical architecture in the leafy streets of the New Town made for new standards of civic architecture, and Scottish education could be of the highest quality.

For his latest journey Michael Palin, actor, writer, novelist, comedian, Python, traveller, has gone beyond geography in search of the visual arts with his characteristic enthusiasm, eclectic curiosity, and sense of discovery.

Minimalist sculpture has, for decades, been making gallery visitors self-conscious. How should you react to a metallic piece by Donald Judd which has evidently been machined rather than modelled? Can you really walk all over an arrangement of lead floor tiles by Carl Andre? And how do you look at a Robert Morris mirrored cube without seeing yourself gazing back?

I think of Rose English as the performer who made Miranda Hart’s success possible. I remember seeing her back in the 1980s, improvising solo at a theatre in Chenies Street. She had the audience curling up with embarassed laughter as she took off her heavy boots, stuffed her large feet into dainty ballet pumps and slipped a delicate tutu over her too, too solid frame. While gallumphing around the stage trying to look as elegant and etherial as an anorexic ballet dancer, she addressed various topics such as ambition, longing, appearance, desire, gender and so on.

Following his inclusion in this year’s Venice and Istanbul biennials, Italian artist Fabio Mauri has leapt into the limelight. He is from the same generation as Mario Merz; but whereas Merz and his Arte Povera colleagues have long since enjoyed an international reputation for work which features non-art materials in a raw state (hence the name "Poor Art"), Mauri has languished in relative obscurity – until now, that is.

There’s a lot of breathless frontloading in television documentaries. The headlines promising shock and awe coming up are posted in the opening edit as a way of hooking in the remote-wielding viewer. Very often as presenters stump around history’s muddy digs or leaf through dusty old tomes, the revelations vouchsafed turn out to be a bit iffy, a bit yeah but no but so what? The hyperventilation is often a precursory guarantee of bathos. You’d be better off reading the book. So Andrew Graham-Dixon had to draw on an extra reserve of superlatives to sell Secrets of the Mona Lisa.

The New Yorker Peggy Guggenheim (1898-1979) was the classic poor little rich girl: insecure, a woman with scores, perhaps hundreds of lovers, longing for love, the writer of tell-all memoirs. What sets her apart is that she was also the creator of one of the world’s greatest collections of modern and contemporary western art. 

Walls that are floors, floors that are walls, and stairs that go up to go down: in the brain-befuddling art of MC Escher (1898-1972) the mundane everyday meets a world of paradox in which the rules of gravity, space and material reality are thrown into disarray. From his fantastical architectural spaces with flights of stairs that lead nowhere, to dazzling tessellations that fade into infinity, Escher is synonymous with queasy optical illusions that fascinate and nauseate in equal measure.

Reputations and popularity rise and fall and rise again in cycles, and so with the redoubtable Julia Margaret Cameron (1815–1879). Now considered one of the finest photographers ever, she was an amateur gifted with incredible tenacity, intellectual and physical energy, and stamina. Stubborn and ambitious, for her class and gender she was unusually interested in business. She sold her work, which indeed she copyrighted, through the printsellers Colnaghi’s, and she was always experimenting and thinking of ways to promote her achievement.