Land at Keflavik International Airport (KEF), 50 minutes southwest of Reykjavik. Collect your rental car — driving on the left side... wait, no. Iceland drives on the right, same as the US. This is a surprisingly pleasant surprise.

Reykjavik is the world's smallest capital city in a developed nation — population 130,000 — and it punches far above its weight in art galleries, music venues, design shops, and restaurants. The colourful corrugated-iron-clad houses, the Hallgrímskirkja church soaring above the cityscape like a concrete rocket, the harbour with its ghost-white mountain backdrop: it is one of the most immediately loveable cities on earth.

Spend the first evening on Laugavegur — the main street — eating lamb soup at a cosy bistro, browsing the wool and design shops, and drinking Icelandic craft beer in a bar that plays post-rock at civilised volumes. Iceland's coffee culture is exceptional; the flat white at Reykjavik Roasters sets a standard worth noting.

The Golden Circle is a 300 km loop from Reykjavik covering Iceland's three most iconic geological sites. It is crowded with good reason — these are genuinely extraordinary places.

Þingvellir (Thingvellir) National Park is where the Eurasian and North American tectonic plates are visibly pulling apart — you can walk between the two continents in a rift valley that widens by 2cm every year. It is also where the world's first parliament met in 930 AD. The scale and silence of the place is profound.

Geysir hot spring area: the original geyser (the English word comes from the Icelandic Geysir) no longer erupts regularly, but Strokkur shoots a column of boiling water 20–30 metres every 5–8 minutes with clockwork precision. Stand downwind. Gullfoss — the Golden Waterfall — is a double-cascade waterfall plunging into a canyon so dramatic that Icelandic activist Sigríður Tómasdóttir famously threatened to throw herself into it to prevent it being dammed for a hydroelectric project in 1907. She won. The walk to the viewing platforms includes a genuine soaking from the spray even in still conditions.

Head east from Reykjavik along the Ring Road. Seljalandsfoss appears first — a 60-metre curtain of water that you can walk behind, inside the hollow the falls have carved from the cliff. The path behind is wet, cold, and completely magical, particularly in low-angle evening light when the water turns silver.

Skógafoss is larger, more powerful, and one of Iceland's most photographed waterfalls — on sunny days a rainbow sits in its permanent spray at the base. Climb the 527 steps to the top for views down the glacial river valley stretching to the sea. Behind: the beginning of the Fimmvörðuháls trail, one of Iceland's finest multi-day hikes, passing between two glaciers to Þórsmörk valley.

End the day at Vík í Mýrdal — a tiny black-sand coastal town beneath the Katla volcano. The Reynisfjara black sand beach features basalt columns stacked like organ pipes and sea stacks (Reynisdrangar) rising from the surf. The waves here are extremely dangerous — sneaker waves have killed multiple tourists who did not heed the warning signs. Stay above the high tide line and do not turn your back on the sea.

Vatnajökull is the largest glacier in Europe — covering 8% of Iceland's total land area. Book a guided glacier walk (Iceguide, Arctic Adventures, or Glacier Journey) in advance — you cannot safely explore a glacier without crampons and a professional guide who knows where the crevasse fields are. Two hours on the ice, watching the glacier's deep blue light filter through seracs and moulins, is unlike any other experience in Europe.

Jökulsárlón Glacier Lagoon is where Vatnajökull's outlet glacier calves icebergs directly into a black-sand-rimmed tidal lagoon. The icebergs drift slowly to the sea, turning from white to aquamarine to deep blue as they age and compress. Seals haul themselves onto the larger bergs. Boat tours (amphibious Zodiac or duck boat) take you into the field of icebergs for 30–45 minutes — extraordinary in any weather.

Diamond Beach is 300 metres away — where the icebergs that exit the lagoon wash up on the black volcanic sand as scattered clear fragments like enormous scattered diamonds. The contrast of crystal-clear ice against jet-black sand is one of the most visually striking beaches in the world.

The East Fjords (Austurland) are the least-visited section of the Ring Road — and for road trippers who want the feeling of genuine remoteness, this is where Iceland delivers it. The road winds through a series of dramatic fjords — steep walls falling directly into perfectly calm dark water — with reindeer frequently crossing at dawn, and small fishing villages of 50–200 people appearing around headlands with no warning.

Djúpivogur is an old trading post with a harbour installation of 34 stone eggs on stilts representing local seabird species. Seyðisfjörður (accessible via a steep, beautiful mountain road) is a spectacular fjord town with blue-painted wooden Norwegian-style houses and a thriving arts community that somehow operates from a population of 700 people in a fjord surrounded by 1,000-metre mountains.

Dettifoss is Europe's most powerful waterfall — 193 cubic metres per second of glacial meltwater dropping 44 metres into a canyon of dark grey basalt. The noise and spray are felt from 500 metres away. Standing at the lip and watching the sheer volume of water disappear into thundering mist below is physically overwhelming in the best possible sense. The Ridley Scott film Prometheus opened here; it looks exactly as alien as it does on screen.

Mývatn lake region is a geologically surreal landscape: pseudocraters, lava pillars, boiling mud pools, and steam vents all within a 30-minute drive of each other. The Námaskarð geothermal area is an accessible and dramatic field of sulphur-yellow fumaroles and mud pots — the smell of hydrogen sulphide is powerful and constant. The Mývatn Nature Baths (a less-crowded equivalent to the Blue Lagoon) sits above the lake and makes an excellent evening end to the day.

Akureyri (population 20,000) is Iceland's second city — which gives a sense of scale — sitting at the end of Eyjafjörður, Iceland's longest fjord. It has a warmth and energy unusual for a town this size this far north: a good restaurant scene, botanical gardens that somehow grow bananas at 65°N latitude, and a Christmas light tradition where the traffic lights are shaped like hearts.

Book a morning whale watching tour from the harbour (Ambassador Whale Watching, North Sailing) — Eyjafjörður has year-round humpback whales and minke whales, and in summer, white-beaked dolphins frequently accompany the boats. The three-hour trips have very high sighting success rates. In the afternoon, drive the 45-minute circuit to Goðafoss — the "Waterfall of the Gods," where Iceland's parliament speaker threw his Norse god idols into the river upon Iceland's conversion to Christianity in 1000 AD. It is a spectacular horseshoe of falls in any light.

The Snæfellsnes Peninsula is an optional but strongly recommended detour extending west from the Ring Road — a 120 km finger of land ending at the glacier-capped volcano where Jules Verne's Professor Lidenbrock descended to the centre of the earth in Journey to the Centre of the Earth (1864). Snæfellsjökull glacier is genuinely eerie on overcast days — it sits above the peninsula like a sleeping ghost, visible from both sides.

Along the way: Kirkjufell mountain — the single most photographed location in Iceland, a perfectly symmetrical arrowhead of basalt rising from a valley floor with a double waterfall in front. It appears in Game of Thrones as the "Arrowhead Mountain" north of the Wall. The light on Kirkjufell at midnight in June, when the sun barely dips below the horizon and the clouds glow orange, is one of those images you realise you will never forget while you are still standing there.

The Westfjords are the most remote and least visited part of Iceland — a series of deeply indented fjords at the far northwest that require serious commitment to reach. A full day each way minimum. But for those who make it: Látrabjarg is the westernmost point in Europe and the world's largest puffin colony — millions of puffins nest in the cliffs, and unlike anywhere else in the world, they are completely unbothered by humans. You can sit within a metre of a puffin standing at the cliff edge looking comically serious about its obligations.

Dynjandi is arguably Iceland's most beautiful waterfall — a wide, fan-shaped cascade of seven tiers descending 100 metres down a mountain face at the end of a still, mirror-flat fjord. At the base: four smaller named waterfalls that you walk through to reach the main falls. The whole site has almost no visitor infrastructure — a small car park, a basic path, and the falls. Pure Iceland.

Return to Reykjavik for a final evening. The most important stop: Bæjarins Beztu Pylsur — a hot dog stand that has operated from a small kiosk near the harbour since 1937. The Icelandic hot dog (lamb, pork, beef blend, topped with raw onion, crispy fried onion, sweet brown mustard, ketchup, and a Scandinavian rémoulade) is genuinely one of the world's great fast foods. Bill Clinton made it famous; Iceland's Prime Ministers visit regularly. Order eina með öllu — "one with everything."

Return your rental car to the airport in Keflavik — most companies allow drop-off 24 hours. The 50-minute drive from Reykjavik passes through the Reykjanes lava field, where the 2021–present Fagradalsfjall volcanic eruption area may be visible. If an eruption is active during your visit, guided lava tours run right up to the flow — an experience available nowhere else on earth for a casual road trip.