1. Amsterdam, Netherlands
2. Athens, Greece
3. Atlantic City, New Jersey
4. Baku, Azerbaijan
5. Barcelona, Spain
6. Bath, England
7. Belfast, Northern Ireland
8. Bergamo, Italy
9. Berlin, Germany
10. Bern, Switzerland
11. Bilbao, Spain
12. Bologna, Italy
13. Bordeaux, France
14. Boston, Massachusetts
15. Brasov, Romania
16. Bratislava, Slovakia
17. Bruges, Belgium
18. Brussels, Belgium
19. Bucharest, Romania
20. Budapest, Hungary
21. Chicago, Illinois
22. City of San Marino, San Marino
23. Cologne, Germany
24. Copenhagen, Denmark
25. Cordoba, Spain
26. Crete, Greece
27. Dublin, Ireland
28. Edinburgh, Scotland
29. Florence, Italy
30. Gdansk, Poland
31. Gdynia, Poland
32. Gibraltar, British Overseas Territory
33. Glasgow, Scotland
34. Gothenburg, Sweden
35. Gozo Island, Malta
36. Granada, Spain
37. Helsinki, Finland
38. Kiev, Ukraine
39. Koprivshtitsa, Bulgaria
40. Krakow, Poland
41. Lisbon, Portugal
42. Liverpool, England
43. Ljubljana, Slovenia
44. London, England
45. Lucerne, Switzerland
46. Luxembourg City, Luxembourg
47. Madrid, Spain
48. Malaga, Spain
49. Malmo, Sweden
50. Manchester, England
51. Marbella, Spain
52. Mdina, Malta
53. Miami, Florida
54. Milan, Italy
55. Minsk, Belarus
56. New York City, New York
57. Nicosia, Cyprus
58. Oslo, Norway
59. Pamplona, Spain
60. Paris, France
61. Philadelphia, Pennsylvania
62. Pisa, Italy
63. Plovdiv, Bulgaria
64. Prague, Czech Republic
65. Pristina, Kosovo
66. Riga, Latvia
67. Rome, Italy
68. Ronda, Spain
69. Seville, Spain
70. Skopje, North Macedonia
71. Sofia, Bulgaria
72. Sopot, Poland
73. Stockholm, Sweden
74. Tallinn, Estonia
75. Tenerife, Canary Islands, Spain
76. Tirana, Albania
77. Torrevieja, Spain
78. Vaduz, Lichtenstein
79. Valencia, Spain
80. Valletta, Malta
81. Vatican City, Vatican City State
82. Vienna, Austria
83. Vilnius, Lithuania
84. Warsaw, Poland
85. Zagreb, Croatia
86. Zurich, Switzerland