Begin the day with an unhurried walk around the rim of Kerið, where rust-red volcanic walls fall away to a deep blue-green crater lake. A quietly cinematic introduction to Iceland's volcanic past.

Stand at the edge of Iceland's most beloved waterfall as glacial meltwater from Langjökull tumbles in two stages into a mist-filled canyon. The sound reaches you long before the view does.

An all-inclusive lunch served inside a working geothermal greenhouse, surrounded by climbing tomato vines and the resident herd of Icelandic horses next door.

Walk through the steaming geothermal field that gave every geyser in the world its name, and watch Strokkur erupt skyward every few minutes.

Close the day at Iceland's UNESCO World Heritage site, where the first parliament convened in 930 AD and the continental rift between two tectonic plates is visible underfoot.