Monuments:
1. arcDeTriomphe.jpg: https://commons.wikimedia.org/wiki/File:Arc_de_Triomphe_du_Carrousel_12_June_2006.jpg by Dan Mckay / CC BY-SA 2.0
2. bayterek.jpg: https://commons.wikimedia.org/wiki/File:Bayterek_(525155966).jpg by Alastair Rae / CC BY-SA 2.0
3. beandenburgGate.jpg: https://commons.wikimedia.org/wiki/File:Brandenburger_Tor_-_freakyman_2.jpg by freakyman / CC BY 2.0
4. burj.jpg: https://commons.wikimedia.org/wiki/File:Burj_Dubai_Under_Construction_on_13_November_2007.jpg by Imre Solt / CC BY-SA 3.0
5. cathedral.jpg: https://commons.wikimedia.org/wiki/File:Santiago.de.Compostela.Catedral.Noche.jpg by Yearofthedragon / CC BY-SA 3.0
6. Colosseum.jpg: https://commons.wikimedia.org/wiki/File:Colosseum-night.jpg by Jimmy Engelbrecht / CC BY-SA 3.0
7. christTheRedeemer.jpg: https://commons.wikimedia.org/wiki/File:O_Cristo_Redentor.JPG by KátiaLira / CC BY-SA 3.0
8. eiffelTower.jpg: https://commons.wikimedia.org/wiki/File:Eiffel_Tower_from_north_Avenue_de_New_York%2C_Aug_2010.jpg byJulie Anne Workman / CC BY-SA 3.0
9. empireState.jpg: https://commons.wikimedia.org/wiki/File:Empire_State_Building_in_New_York.JPG by Lolalatorre / CC BY-SA 3.0
10. greatPyramid.jpg: https://commons.wikimedia.org/wiki/File:Kheops-Pyramid.jpg by Nina / CC BY-SA 3.0
11. greatWall.jpg: https://commons.wikimedia.org/wiki/File:The_Great_wall_-_by_Hao_Wei.jpg by Hao Wei / CC BY 2.0
12. IndiaGate.jpg: https://commons.wikimedia.org/wiki/File:India_Gate_illuminated.jpg by Rdglobetrekker / CC BY-SA 3.0
13. jucheTower.jpg: https://commons.wikimedia.org/wiki/File:Juche_Tower_2012.JPG by Nicor / CC BY-SA 3.0
14. kutubMinar.jpg: https://commons.wikimedia.org/wiki/File:Qutb_Minar_tower.jpg by Ondřej Žváček / CC BY-SA 3.0
15. leaningTowerOfPisa.jpg: https://commons.wikimedia.org/wiki/File:Torre_di_Pisa.jpg by Dan Kamminga / CC BY 2.0
16. leMusee.jpg: https://commons.wikimedia.org/wiki/File:Le_mus%C3%A9e_du_Louvre_(4750261198).jpg by Jean-Pierre Dalbéra / CC BY 2.0
17. leninMuseum.jpg: https://commons.wikimedia.org/wiki/File:Former_Lenin_museum_(Moscow)_by_shakko_01.jpg by Shakko / CC BY-SA 4.0
18. monument1.jpg: https://commons.wikimedia.org/wiki/File:Israel-2013(2)-Jerusalem-Temple_Mount-Dome_of_the_Rock_(SE_exposure).jpg by Andrew Shiva / CC BY-SA 4.0
19. monument2.jpg: https://commons.wikimedia.org/wiki/File:Apamea_Tetrastylon.jpg by Abdulhadi Najjar / CC BY-SA 3.0
20. monument3.jpg: https://commons.wikimedia.org/wiki/File:Franz_von_Assisi_Kirche-DSC_0004w.jpg by Peter Haas / CC BY-SA 3.0 AT
21. mountRushmore.jpg: https://commons.wikimedia.org/wiki/File:Dean_Franklin_-_06.04.03_Mount_Rushmore_Monument_(by-sa)-3_new.jpg by Dean Franklin / CC BY 2.0
22. operaHouse.jpg: https://commons.m.wikimedia.org/wiki/File:Sydney_opera_house_side_view.jpg by Mfield / CC BY-SA 3.0
23. parthenon.jpg: https://commons.wikimedia.org/wiki/File:2006_01_21_Ath%C3%A8nes_Parth%C3%A9non.JPG by Harrieta / CC BY-SA 3.0
24. statueOfLiberty.jpg: https://commons.wikimedia.org/wiki/File:Statue-de-la-liberte-new-york.jpg by featherboa / CC BY-SA 2.0
25. tajMahal.jpg: https://commons.wikimedia.org/wiki/File:Taj_Mahal%2C_Agra%2C_India.jpg by Yann / CC BY-SA 4.0
26. usCapitol.jpg: https://commons.wikimedia.org/wiki/File:US_Capitol_east_side.JPG by Martin Falbisoner / CC BY-SA 3.0
27. victoriaMemorial.jpg: https://commons.wikimedia.org/wiki/File:Memorial_a_Victoria,_Londres,_Inglaterra,_2014-08-07,_DD_008.JPG by Diego Delso / CC BY-SA 4.0
28. zimniPalace.jpg: https://commons.wikimedia.org/wiki/File:Zimn%C3%AD_pal%C3%A1c_%283%29.jpg by Dezidor / CC BY 3.0