Pavilhão do Conhecimento

The Pavilhão do Conhecimento (Pavilion of Knowledge) is the flagship of Ciência Viva, Portugal’s national network of science centres, and sits on the riverside at Parque das Nações, a short walk from the Oceanário. Nearly everything inside is meant to be handled. There are more than 2,500 square metres of exhibitions, split into a few permanent areas and a big temporary show that changes every year or two.

The centre puts the average visit at an hour and a half. With under-sevens who find the science circus, it is easy to spend most of a morning or afternoon, and your ticket is valid all day, so you can go out for lunch or a run by the river and come back.

TCHARAN! Circo de Experiências is an 800-square-metre science circus set in a pretend city park, aimed at children aged 3 to 12. There’s a mirror maze under a dome, a musical floor to hop on, a giant kaleidoscope you can step inside and a huge marble-run style machine where friction, gravity and inertia do the work. Children can pull a rope to work a giant marionette and find out which hand needs less force, see how many straw noses they can switch off in 30 seconds, knock over ice creams with a ball and a catapult, put on a suit to see if they stick to a frog’s tongue, and sniff flowers to guess the smell. A corner of giant bricks, gutters, channels and oversized screws lets them build whatever they like.

Inside it is the Casa Inacabada (the Unfinished House), a building site for ages 3 to 6. Children work the crane to lift materials, push wheelbarrows, use pulleys, build walls and wire up coloured lights, in hard hats. You collect an access card for it when you buy your ticket. For the last hour of the day it opens to builders of any age: 17:00 to 18:00 on weekdays and 18:00 to 19:00 at weekends and on holidays, which is handy if an older sibling wants a go.

Era uma vez (Once upon a time) takes eight children’s stories and pulls the science out of each one. It came home in 2026 after touring Guimarães, Coimbra, Paris, Valencia and Barcelona, and the centre says it works for every school level. Some of what children find:

• The Princess and the Pea leads to the tiny dust mites that live in every mattress.
• Ali Baba has a slot-machine code to crack, with a lesson on probability and why passwords should change.
• In Alice’s room, perspective makes an adult look like a child and a child look like a giant.
• Little Red Riding Hood’s wolf turns out to hear a mosquito from more than three metres away.
• Jack’s beanstalk opens up the water footprint of everyday food, and a display of beans (Portugal has nearly 200 varieties).
• The Three Little Pigs asks which building technique survives the wolf’s breath. The answer isn’t only about bricks.

In the middle is an enchanted forest where the treetops change colour like the seasons and you can smell the woods. Around it, fables become shadow play and a witch’s cauldron shows what fungi, bacteria and even leeches do in nature.

Explora is the centre’s oldest exhibition, about 40 exhibits first designed for the Exploratorium in San Francisco. Its creator, the physicist Frank Oppenheimer, called it “a forest of natural phenomena”. Children mix coloured lights, look through lenses and prisms, find rainbows in soap bubbles, try optical illusions and puzzles about how the eye and brain see, watch sound waves and the harmonics on a guitar string, and break up a tornado with their hand to watch it form again next to a field of slowly shifting sand dunes. Eight to fourteen year olds tend to get the most from this part.

Some exhibits, which the centre calls Módulos em fuga (runaway exhibits), are dotted around the corridors and balconies. The best known is a bicycle you ride along a cable six metres above the floor. A 200-kilo counterweight hangs beneath it, much heavier than bike and rider, so it cannot tip over. There’s also oversized furniture that makes adults feel three years old, a chair that seems to shrink whoever sits in it, a dark corridor of perspective tricks, a plasma ball, a laser harp with beams instead of strings, a spinning spiral that makes your hand seem to move afterwards, and a sandbox where the landscape you shape is coloured by height with contour lines, like a map.

At Fishanário, children colour in a sea creature such as a turtle, a pufferfish or a shark, scan the drawing and then watch it swim in a projected ocean. Toddlers can do this one with help.

A new exhibition, Floresta: uma experiência de raiz (Forest: an experience from the roots), opens on 24 October 2026. The ticket office says tickets bought from 29 September give 30% off a visit from that date, until 25 November, at the ticket desk in person. Science and Technology Week runs from 23 to 29 November, and entry is free for everyone on 24 November, National Scientific Culture Day.

When checked in September 2026, tickets were €15 for adults, €10 for ages 3 to 17 and €11 for over-65s. The family ticket, €35, covers two adults and their children up to 17, so it pays off with two children or more. Visitors with special needs get 50% off. Entry is free for everyone on 16 May, 25 July and 24 November.

For several science centres, the Circuitos Ciência Viva card costs €70 and gives two adults and their children up to 17 free entry to the 22 centres in the network for 12 months. That includes UC Exploratório in Coimbra and the Centro Ciência Viva do Algarve in Faro. Paid activities aren’t covered.

From 7 September 2026 the centre is open Tuesday to Friday from 10:00 to 18:00 and at weekends and on holidays from 10:00 to 19:00, with last entry half an hour before closing. It closes on Mondays except in summer (1 June to 6 September in 2026).

Parties are for ages 3 to 13 and led by the centre’s own staff. Daytime parties last three hours: an hour-long themed activity, an hour in the exhibitions, then cake and singing. Themes in 2025–2026 included camouflage, glow-in-the-dark creatures, an edible solar system, a Big Bad Wolf building challenge and an escape room, and there is a night party from 20:30 to 23:00. Prices ran from €250 for 11 to 15 children without food to €500 for 26 to 30 with a snack.

The summer camp, Férias com Ciência, is proper drop-off care for ages 6 to 12. In 2026 it ran from 6 July to 11 September, 09:00 to 18:00, at €45 a day or €185 a week. Weeks mixed solar-powered cars, drones, robots, Minecraft coding, 3D printing, virtual reality and kitchen chemistry, with a trip to the Oceanário each week and a race of recycled boats on Fridays.

Weekday mornings in term time bring school groups, and the exhibits sit close together, so it gets loud. A child who struggles with noise will do better on a weekday afternoon or early at a weekend. Food and drink aren’t allowed in the exhibitions, so plan snacks around the cafeteria.

The Oceanário de Lisboa is a few minutes’ walk along the river, and the Lisbon cable car runs above the water nearby. Parque das Nações is flat, with gardens and wide promenades for scooters, and the free Parque das Nações pump track by the Vasco da Gama Bridge suits children who’ve brought bikes.

How long do you need at the Pavilhão do Conhecimento?

The centre says an hour and a half on average. With young children in TCHARAN! or a teenager on the illusions, allow two to three hours.

Is it good for toddlers?

For three year olds and up, yes: TCHARAN! and the Casa Inacabada are built for them. Under-threes can enjoy the musical floor, the mirrors and Fishanário with a parent, but much of the rest is aimed at older children.

Can you bring a buggy?

Yes. There are ramps and lifts throughout, and the centre lends buggies at the ticket desk when available.

Can I leave my child there?

Not on a normal visit: children up to 14 must be with an adult. The summer camp for ages 6 to 12 is the drop-off option.