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. Podgorica, Montenegro
65. Prague, Czech Republic
66. Pristina, Kosovo
67. Riga, Latvia
68. Rome, Italy
69. Ronda, Spain
70. Seville, Spain
71. Skopje, North Macedonia
72. Sofia, Bulgaria
73. Sopot, Poland
74. Stockholm, Sweden
75. Tallinn, Estonia
76. Tenerife, Canary Islands, Spain
77. Tirana, Albania
78. Torrevieja, Spain
79. Vaduz, Lichtenstein
80. Valencia, Spain
81. Valletta, Malta
82. Vatican City, Vatican City State
83. Vienna, Austria
84. Vilnius, Lithuania
85. Warsaw, Poland
86. Zagreb, Croatia
87. Zurich, Switzerland