ALL ANSWERS · LANDMARKS · DAILY No. 51 · OCTOBER 24, 2026
Size It Up Landmarks answer: October 24
The five Landmarks silhouettes for October 24, with the true sizes. If you have not played yet, this page is a spoiler — play these five first, then come back to argue with the numbers.
Day 51 ran from Al-Khazneh (39.5 m) to the Akashi Kaikyo Bridge Main Span (1.991 km). The widest gap was round 3, Al-Khazneh against The Gherkin, at 4.6×; the closest call was round 4, Hoover Dam against Empire State Building, only 2.0× apart — the kind of round that separates a 90 from a 60.
SPOILER · TODAY’S FIVE
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ROUND 1
Lotte World Tower (height, rounded) vs Sydney Opera House (length)
Sydney Opera House · reference · 183 m Lotte World Tower · true height · 555 m 3.0× taller than the Sydney Opera House
Lotte World Tower: 555 m height (height, rounded). Seoul’s official visitor guide rounds the total height to 555 metres.
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ROUND 2
Willis Tower (Sears Tower, to the tip) vs Akashi Kaikyo Bridge Main Span (between tower centres · schematic)
Akashi Kaikyo Bridge Main Span · reference · 1.991 km Willis Tower · true height · 527 m 3.8× shorter than the Akashi Kaikyo Bridge Main Span
Chicago's Willis Tower is 527 m to the tip of its antennas; the roof is at 442 m.
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ROUND 3
Al-Khazneh (the Treasury at Petra) vs The Gherkin (building height)
The Gherkin · reference · 180 m Al-Khazneh · true height · 39.5 m 4.6× shorter than The Gherkin
The Treasury's façade, carved into the rock at Petra, is 39.5 m high.
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ROUND 4
Hoover Dam vs Empire State Building (to the tip)
Empire State Building · reference · 443 m Hoover Dam · true height · 221 m 2.0× shorter than the Empire State Building
Hoover Dam is 221 m high — about the height of the Golden Gate's towers.
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ROUND 5
Pingshan II Cooling Tower (world's tallest) vs Qutb Minar (tower height)
Qutb Minar · reference · 72.5 m Pingshan II Cooling Tower · true height · 210 m 2.9× taller than the Qutb Minar
The cooling tower of China's Pingshan II power plant rises 210 m on a base 174 m across.
Beat these tomorrow
Every round is worth up to 100 points: within 6% of the true size scores 100, half or double scores 45, five times off scores zero. The daily puzzle is the same five for everyone and refreshes at midnight in your time zone; if you want more than five, Size It Up Unlimited draws fresh pairs from the whole library for as long as you like.