ALL ANSWERS · LANDMARKS · DAILY No. 20 · SEPTEMBER 23, 2026
Size It Up Landmarks answer: September 23
The five Landmarks silhouettes for September 23, 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 20 ran from the Horyuji Five-storied Pagoda (32.5 m) to the Tokyo Skytree (634 m). The widest gap was round 5, Pingshan II Cooling Tower against Tokyo Skytree, at 3.0×; the closest call was round 1, Sydney Opera House against London Eye, only 1.4× apart — the kind of round that separates a 90 from a 60.
SPOILER · TODAY’S FIVE
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ROUND 1
Sydney Opera House (length) vs London Eye
London Eye · reference · 135 m Sydney Opera House · true length · 183 m 1.4× longer than the London Eye
The Sydney Opera House stretches about 183 m along the harbour; its tallest shell rises 65 m.
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ROUND 2
Big Ben (Elizabeth Tower) vs Horyuji Five-storied Pagoda (from foundation surface)
Horyuji Five-storied Pagoda · reference · 32.5 m Big Ben · true height · 96 m 3.0× taller than the Horyuji Five-storied Pagoda
The clock tower is 96 m tall; Big Ben is strictly the 13.7-tonne bell inside it.
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ROUND 3
Williamsburg Bridge Main Span (between tower centres · schematic) vs Colosseum (long axis)
Colosseum · reference · 189 m Williamsburg Bridge Main Span · true length · 487.7 m 2.6× longer than the Colosseum
Williamsburg Bridge Main Span: 487.68 m length (between tower centres · schematic). Horizontal main span between the two tower centre lines; approach roads and side spans excluded. Tower heights, deck depth and cable details are schematic, not measured.
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ROUND 4
Lotte World Tower (height, rounded) vs Burj Al Arab (building height)
Burj Al Arab · reference · 321 m Lotte World Tower · true height · 555 m 1.7× taller than the Burj Al Arab
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 5
Pingshan II Cooling Tower (world's tallest) vs Tokyo Skytree
Tokyo Skytree · reference · 634 m Pingshan II Cooling Tower · true height · 210 m 3.0× shorter than the Tokyo Skytree
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.