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How well do you know Lisbon?

Guess the real numbers behind Lisbon's history and landmarks, see how everyone else guessed, and get the source.

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When was Lisbon's Santa Justa Lift (Elevador de Santa Justa) inaugurated?

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Explore the historic Padrao dos Descobrimentos monument in Lisbon, Portugal, under a clear blue sky.
Photo: Farnaz Kohankhaki / Pexels
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Today's round

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  • 1 opinion poll
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Lisbon by the numbers

Real figures with their sources. All Lisbon facts →

1755

In what year did the great earthquake strike Lisbon on the morning of November 1?

The shaking on the morning of November 1 was followed by a tsunami about 6 metres high at Lisbon.

Source: Encyclopaedia Britannica britannica.com

over 500

About how many marine species can visitors see at the Oceanário de Lisboa?

The aquarium sits in Parque das Nações, about 15 minutes from the city center, and its permanent exhibit is called 'One Planet, One Ocean'.

Source: Oceanário de Lisboa oceanario.pt

about 6 m (20 ft)

How high was the tsunami wave that hit Lisbon after the 1755 earthquake?

The same tsunami reached about 20 m (65 ft) at Cádiz, Spain, and was even measured across the Atlantic in Martinique.

Source: Encyclopaedia Britannica britannica.com

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Questions

How does LisbonSurvey.com work?

Each question asks you to guess a real number about Lisbon, Portugal. After you answer you see how everyone else guessed, then the real figure and where it comes from.

How is the daily round scored?

Four stats and one opinion poll. A correct guess earns 100 points plus up to 50 for speed, with a combo bonus for answers in a row. The range next to the right answer earns 40. Opinion polls earn 25 for having your say, and nailing every stat adds 150.

Where do the numbers come from?

Every stat links to its source, such as government statistics agencies, research organizations and industry groups. Figures are checked against the source before they go live.

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