size it up.

A little perspective

Detective

Each day, four objects share one scale. The marked reference is correct. Find the one incorrectly sized object among the other three in up to three guesses. Wrong guesses are ruled out. Finding it on guess 1, 2 or 3 earns 40, 25 or 10 points. Then resize it once for up to 60 more. A new scene opens at 00:00 UTC.

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Daily scale mystery

Scale Detective

Past challenge. Scores do not count toward leaderboards or today’s progress.

2026-10-021 · Find it

Find the odd one out

The reference is correct. Exactly one of the other three has changed.

Guesses left: 3
Compare heightsOne shared scale

Find it on guess 1 / 2 / 3: 40 / 25 / 10 points. Then repair its size for up to 60 more. One final correction.

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View answers and sources

Answers from this past challenge. Today’s challenge remains a surprise.

The changed object: Washington Monument

The correct adjustment: 0.62× the original shown size.

Space Needle
ReferenceSpace Needle184.4 m tall

Seattle’s Space Needle measures 605 feet (about 184.4 metres) from the ground to the top of its red aircraft warning beacon.

Source
Gateway Arch
Compared objectGateway Arch192 m tall

The Gateway Arch is 630 feet (192 metres) tall, measured from the ground to the crown.

Source
Washington Monument
Compared objectWashington Monument169.05 m tall

NOAA measured 169.046 metres from the original entrance floor to the aluminum tip; this label rounds it to 169.05 metres. The older 555-foot figure used a different starting level.

Source
Eiffel Tower
Compared objectEiffel Tower330 m tall

The Eiffel Tower reaches 330 metres from ground level to its antenna tip. This includes the six-metre radio antenna added in March 2022.

Source

Illustrations shown individually, not to a shared scale.

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