There is a total of 21190 clues beginning with si
- Site of the Hale telescope
- Site of the Hale telescope
- Site of the Hall of Fame: Abbr
- Site of the hammer, anvil and stirrup and a hint to the hidden word in the answers to starred clues
- Site of the heart line and life line
- Site of the Heart of Midlothian
- Site of the Henley Regatta
- Site of the Herbert Hoover Presidential Library and Museum
- Site of the Ho Chi Minh mausoleum
- Site of the house that inspired "American Gothic"
- Site of the HQ of five major sports
- Site of the Ibsen Museum
- Site of the Iditarod
- Site of the Iliad
- Site of the In Flanders Fields Museum
- Site of the incus
- Site of the infamous "be-in" of '69
- Site of the infamous Hoa Lo Prison
- Site of the Innoventions museum
- Site of the Jasmine Revolution
- Site of the June Fourth Incident
- Site of the Kaaba
- Site of the Karakum, Thar and Gobi deserts
- Site of the Khan el-Khalili bazaar
- Site of the King Hussein Mosque
- Site of the Klondike gold rush
- Site of the Ko'olau range
- Site of the Kocatepe Mosque
- Site of the Kon-Tiki Museum
- Site of the Koolau Range
- Site of the Krupp steel works
- Site of the Krupp steelworks
- Site of the Krupp works
- Site of the largest church in France
- Site of the largest government-owned US arsenal
- Site of the largest sports arena in Europe
- Site of the largest WWII Allied Pacific amphibious assault
- Site of the last battle of the Cuban Revolution
- Site of the last Expos game
- Site of the last Japanese Winter Olympics
- Site of the last Lincoln-Douglas debate
- Site of the last Pan Am Games
- Site of the last stand
- Site of the last Summer Olympics
- Site of the League of Nations
- Site of the Leaning Tower
- Site of the Left Bank
- Site of the legendary Fountain of Youth
- Site of the legendary Labyrinth
- Site of the Lone Star State's Fort Concho
- Site of the longest golf drive ever
- Site of the longest single human spaceflight
- Site of the Louvre
- Site of the marriage miracle
- Site of the Masters Tournament
- Site of the Mausoleum
- Site of the Met's new home
- Site of the MGM Grand
- Site of the Minoan civilization
- Site of the Minotaur's Labyrinth
- Site of the Missouri State Fair
- Site of the Mohole
- Site of the Mokuaweoweo crater
- Site of the mountain cave where Zeus was reared
- Site of the Mughal Empire's Red Fort
- Site of the Munch Museum
- Site of the Museum of Anatolian Civilizations
- Site of the mythical Lethe River
- Site of the National Aquarium
- Site of the National Pro-Am golf tournament
- Site of the New Your Coliseum
- Site of the Nibelungen Hoard
- Site of the Nobel Institute
- Site of the Norman Conquest
- Site of the Normandy invasion
- Site of the OK Corral
- Site of the Oakland A's spring training facility
- Site of the oldest church in France
- Site of the oldest Scandinavian university (1477)
- Site of the oldest US observatory
- Site of the oldest university in South America
- Site of the One Pillar Pagoda
- Site of the only royal palace in the US
- Site of the only surviving ancient Wonder
- Site of the only WWII battle on US soil
- Site of the original marathon route
- Site of the original sin
- Site of the Outback Bowl
- Site of the Palazzo Doria
- Site of the parliament-housing Sansad Bhavan
- Site of the patella
- Site of the patella
- Site of the Peacock Throne
- Site of the Pearl Mosque
- Site of the Pearl Mosque
- Site of the Pepsi 400
- Site of the Persepolis ruins
- Site of the phalanx bone
- Site of the Piano Provenzana ski resort
- Site of the Piazza del Popolo