Walked, not just viewed from a distance — the Zambian side sits inside Mosi-oa-Tunya National Park, a UNESCO World Heritage Site since 1989, and generally sees fewer crowds than the Zimbabwe side across the river. The falls span roughly 1.7km and drop about 100m — double the height of Niagara — with spray visible from up to 30km away in the right season. The Knife's Edge walk gives one of the best views of the main gorge and the eastern cataract.
Zambia's oldest and largest museum, covering the region's history from early exploration (including David Livingstone's own artifacts) through to Zambian independence — a solid grounding stop before or after the Falls themselves.
A Big Five safari at Mukuni, near the traditional village of the same name outside Livingstone — one of the more accessible ways to see the region's major wildlife without heading deep into a national park.