I have a list of places that you can find in the sim. Maybe it helps to get some inspiration:
*** Misc landmarks ***
Eagle´s Nest: 47.6114612,13.041875
Fuente Dé cablecar (cablecar is missing in game): 43.1441244,-4.8123281
Ha Long Bay: 20,897554, 107,199868
KaiTak: 22.317883,114.202108
Nazca lines: -14.6942217,-75.1224994
Panama canal (MPMG)
Talcha (VNJU) (and in general any Tibet/Butan airstrip, as they are amazing due to the landscapes)
Suez canal (HEPS)
*** Islands ***
Aleutian (PAAK)
Antigua and Barbuda (TAPA)
Azores (LPHR)
Bahamas (MYNN)
Barbados (TBPB)
Barra (EGPR)
Bermuda (TXKF)
Bikini (PKRG)
Bora Bora (NTTB)
Christmas Island (YPXM)
Cook (NCGR)
Easter Island (FMEP)
Falkland (SFAL)
Feroe (EKVG)
Fiyi (NFFN)
Grenada (TGPY)
Hawaii (PHNL)
Helgoland (EDXH)
Maldivas (VRMG)
Marianas (PGSL)
Marshall (PKWA)
Mauricio (FIMP)
Micronesia (PTPN)
Midway (PMDY)
Polinesia (NTAA)
Reunion (FMEP)
Saba (TNCS)
Samoa (NSTU)
Seychelles (FSSF)
Solomon (AGGH)
Tioman (WMBT)
Trinidad and Tobago (TTPP)
Virgin (TISX)
Wake (PWAK)
*** Military areas ***
Area 51 (KXTA)
Area 6: 36.9283421,-116.009046
Diego Garcia (FJDG)
Dugway Proving Ground (KDPG)
Edwards (KEDW)
Guadalupe (MMGD)
Guam (PGUM)
Fort Detrick: 39.4354683,-77.4293499
HAARP: 62.3910034,-145.1327423
Harvey Point (NC01)
Jacksonville (KNIP)
Kodiak (PADQ)
Mount Weather: 39.0647902,-77.8893985
NASA (KTTS)
Nellis (KLSV)
NORAD: 38.744528,-104.8456696
Okinawa (ROTM)
Raven Rock: 39.7341628,-77.421213
Wright-Patterson (KFFO)
Cheers