iPavilhão do Conhecimento (Pavilion of Knowledge) is Portugal's largest science and technology centre, run by Ciência Viva on the former Expo 98 site in Parque das Nações. Opened in July 1999 in a building by architect João Luís Carrilho da Graça that won the Valmor Prize, it fills some 4,000 m² with hundreds of interactive exhibits on physics, maths, chemistry, biology and the social sciences. Highlights include the Exploratorium-born Explora hall, the TCHARAN! science circus for younger children and a rolling programme of large temporary exhibitions.

A science circus for explorers aged 3 to 12, with a hall of mirrors, a musical floor, a giant kaleidoscope and the Unfinished House building site.

An immersive virtual aquarium: colour in a crab, pufferfish or jellyfish, scan the drawing and watch it swim into a projected ocean.

Runaway exhibits scattered through the building: giant furniture, an anamorphic corridor and the famous flying bicycle ridden on a cable six metres up.

A "forest of natural phenomena" first conceived for San Francisco's Exploratorium: about 40 exhibits on light, vision, perception, waves and complex systems, including a touchable tornado.
Largo José Mariano Gago, nº 1, Parque das Nações, 1990-073 Lisboa, Portugal
Nearest station: Oriente (Metro Red Line and CP rail) and Oceanário Lisboa bus stop (Carris 728)
Show on map| Mon | Closed |
| Tue | 10:00–18:00 |
| Wed | 10:00–18:00 |
| Thu | 10:00–18:00 |
| Fri | 10:00–18:00 |
| SatToday | 10:00–19:00 |
| Sun | 10:00–19:00 |
From €15
Youth 3-17 €10, senior 65+ €11, family (2 adults + children to 17) €35, under 2 free; 50% discount for visitors with special needs. Free for everyone on 16 May, 25 July and 24 November.
Fully accessible with ramps, lifts and accessible toilets; wheelchairs and strollers lent at the ticket office; guide dogs welcome.
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