FreeThe free visitor centre of the world’s largest particle physics laboratory, designed by Renzo Piano. Interactive exhibitions on particles, the universe and the quantum world, science shows, lab workshops and guided tours led by CERN scientists.
A one-hour sightseeing cruise on the Geneva end of the lake with CGN, the historic Lake Geneva shipping company, from the Mont-Blanc pier. The Jet d’Eau, lakeside parks and mansions, and Mont Blanc on a clear day, with an audio guide app.
FreeGeneva’s emblem: a plume of lake water shot 140 metres into the air from the end of a stone jetty. Free to see from anywhere along the shore, and you can walk out along the jetty to feel the spray, then stroll the lakeside quays and parks.
The hilltop heart of Geneva: a cathedral where Calvin preached, with free entry, a 157-step tower climb for the best view over the lake, and one of the largest archaeological sites north of the Alps underneath, all set among the cobbled lanes of the Old Town.

A one-hour guided tour of the United Nations Office at Geneva, the busiest centre of multilateral diplomacy in the world, including the Assembly Hall and council chambers. Bring your passport and book early: places are limited during renovation.
1 hour (plus security)$$Official site → 
Switzerland’s most visited historic monument, a medieval castle on a rock in Lake Geneva near Montreux, immortalised by Lord Byron. Halls, towers, chapels and the famous dungeon, an easy train day trip from Geneva. Open daily, with shorter hours in winter.
2 hours (plus travel)$$Tickets on Tiqets → The museum of Charlie Chaplin’s life and work, in the manor house above Vevey where he lived with his family for the last 25 years of his life, plus a studio full of film sets. Joyful, moving and one of the best day trips from Geneva.
2-3 hours (plus travel)$$$Tickets on Tiqets → 
The world’s leading museum of the Olympic Games, on the lakefront at Ouchy in Lausanne, the Olympic capital. Interactive galleries, torches and medals, a sculpture park and the TOM Café with lake views, under 45 minutes by train from Geneva.
2-3 hours (plus travel)$$Tickets on Tiqets → The country house Voltaire built just across the French border from Geneva, where he spent the last twenty years of his life writing, gardening and receiving visitors. Restored rooms, gardens with Alpine views and an exhibition on Candide.
FreeThe Venice of the Alps, less than an hour south of Geneva in France: canals and flower-hung bridges, the island prison of the Palais de l’Île, a counts’ château and one of the clearest lakes in Europe framed by mountains. The classic day trip from Geneva.