NiagaraFalls(尼亞加拉大瀑布)NiagaraFallsNiagara[na?:?ɡr?]FallsislocatedatthejunctionofOntario[ɑn,t?ri,o][安大略湖]provinceofCanadaandtheUnitedStatesofNewYorkandalsoisagreatfallsontheNiagaraRiverinnortheastNorthandisoneofthewondersofthecontinent'smostfamousviewspottoo.NiagaraFallsactuallyconsistsofthreeparts:AmericanFalls、VeiloftheBrideFallsandtheHorseshoeFalls.Infact,whatweseeisthesideofNiagaraFallsintheUnitedStatesandthewholefallinCanada.panamacanalThePanamaCanal(English:PanamaCanal:CanaldePanama;Spanish)islocatedinPanamaofcentreAmerica,andcrossestheisthmusofPanamaandlinkstheAtlanticandPacificoceansandisanimportantshippingroutes,，atthesametime，Itisknownasoneofthewondersoftheworldandtheworldbridge.Thecanalis82kilometerslong,itswidthisfrom152metersto304meters,itsdepthis13metersto15meters.ThecanalwaterleverabovetheAtlanticandthepacific26meters.YellowstoneNationalPark

Since1872,YellowstoneNationalParkwasfounded,therehavebeenmorethan60milliontouristswhocomehere.Visitorscomefromalloverandareallkinds.Thefeelingwasnaturallyrichandvaried:Therearepleasantpraise,thereisfear,orsurprisedsighs,thereisaweofmeditation,therearethrillingtostimulatefear,therearepairsofnaturalpowerandquietinsight,aswellasbittersweetexperiences......

YellowstoneNationalParkThisnaturalwondersunparalleledbeautyinspiredtheU.S.governmenttocreatetheworldsfirstnationalpark.Forayoungcountryjustcomingofageintheearly1800s,thediscoveryofYellowstonehelpeddefineAmericasidentitywithitsvast,boldlandscape.

WashingtonMonumentItislocatedindowntownWashingtonandisontheaxisoftheHousesofParliamentandtheLincolnMemorial,amarbleobelisk,asquare。Thebottomwidthis22.4meters,itis169metershigh。