Harlem (New York, N.Y.) 35 Hawaii 28 Hollywood (Los Angeles, Calif.) 23 Haiti 21 Hungary 20 Hiroshima-shi (Japan) 12 Harpers Ferry (W. Va.) 6 History 5 Hollywood 5 Hudson River Valley (N.Y. and N.J.) 5 Hippo (Extinct city) 4 Hiroshima-shi 4 Holy Roman Empire 4 Hispanoamérica 3 Hong Kong 3 Hudson River (N.Y. and N.J.) 3 Halley's comet 2 Harrisburg Region 2 Hongrie 2 Hoover Dam (Ariz. and Nev.) 2 Houston 2 Hudson River 2 HIV Infections 1 Haïti 1 Halifax 1 Hallidayboro (Ill.) 1 Hallowell 1 Hallowell (Me.) 1 Hammelburg (Germany) 1 Hampshire County 1 Hana Region 1 Hanford Site (Wash.) 1 Hannibal 1 Hanoi (Vietnam) 1 Hanoi (Viêt-nam) 1 Hanover 1 Harare (Zimbabwe) 1 Harlem 1 Hartford (Ill.) 1 Hattiesburg 1 Hattiesburg (Miss.) 1 Hauslabjoch Pass 1 Hauslabjoch Pass (Italy) 1 Heath 1 Heidenheim an der Brenz (Germany) 1 Hejaz (Saudi Arabia) 1 Hells Canyon 1 Hells Canyon (Idaho and Or.) 1 Herculaneum (Extinct city) 1 Hermitage 1 Hertfordshire (England) 1 Hidalgo County (N.M.) 1 High Plains (U.S.) 1 Highlands (Scotland) 1 Higiene sexual 1 Hildalgo County (N.M.) 1 Hill Creek Site (Ill.) 1 Himalaya Mountains 1 Hippo 1 Historic sites 1 Historiography 1 Ho Chi Minh Trail 1 Hobart 1 Hobart (Tas.) 1 Hog Bluff Site (Ill.) 1 Hoi An 1 Honduras 1 Hong Kong (China) 1 Hongkong 1 Hopewell Culture National Historical Park (Ohio) 1 Hostouň 1 Hội An 1 Hội An (Vietnam) 1 Hudson River Valley 1 Hueyapan (Morelos) 1 Hueyapan (Morelos, Mexico) 1 Huế 1 Huron, Lake (Mich. and Ont.) 1 Ḥaḍramawt (Province) 1 Ḥaḍramawt (Yemen : Province) 1