This is currently the most comprehensive list, courtesy of Jason13579.
2D building outlines in Standard mode: (2D)
3D building outlines in Standard mode: (3D)
3D Flyover in Satellite/Hybrid mode: (Flyover)
Australia (2):
- Sydney (Flyover)
- Melbourne (Flyover)
Austria (4):
- Vienna (2D)
- Graz (2D)
- Linz (2D)
- Salzburg (2D)
Belgium (7):
- Antwerp (2D)
- Ghent (2D)
- Charleroi (2D)
- Liege (2D)
- Brussels (2D)
- Bruges (2D)
- Schaerbeek (2D)
Canada (10):
- Toronto (2D, Flyover)
- Montreal (2D, Flyover)
- Vancouver (2D)
- Calgary (2D, Flyover)
- Edmonton (2D)
- Ottawa (2D)
- Quebeck (2D)
- Winnipeg (2D)
- Halifax (2D)
- Windsor (2D)
Denmark (3):
- Copenhagen (2D, Flyover)
- Aarhus (2D)
- Odense (2D)
Finland (1):
- Helsinki (2D)
France (15):
- Paris (2D)
- Lyon (2D, Flyover)
- Marseille (2D)
- Toulouse (2D)
- Nice (2D)
- Nantes (2D)
- Strasbourg (2D)
- Montpellier (2D)
- Bordeaux (2D)
- Rennes (2D)
- Reims (2D)
- Le Havre (2D)
- Grenoble (2D)
- Dijon (2D)
- Le Mans (2D)
Germany (20):
- Berlin (2D, Flyover)
- Hamburg (2D)
- Munich (2D, Flyover)
- Cologne (2D)
- Frankfurt am Main (2D)
- Stuttgart (2D)
- Dusseldorf (2D)
- Dortmund (2D)
- Essen (2D)
- Bremen (2D)
- Dresden (2D)
- Leipzig (2D)
- Hanover (2D)
- Nuremberg (2D)
- Bochum (2D)
- Bonn (2D)
- Mannheim (2D)
- Rostock (2D)
- Ludwigshafen (2D)
- Potsdam (2D)
Greece (2):
- Athens (2D)
- Thessaloniki (2D)
Hungary (2):
- Budapest (2D)
- Debrecen (2D)
Ireland (2):
- Dublin (2D, Flyover)
- Cork (2D)
Italy (15):
- Rome (2D, Flyover)
- Milan (2D, Flyover)
- Naples (2D)
- Turin (2D)
- Palermo (2D)
- Genoa (2D)
- Bologna (2D)
- Florence (2D)
- Bari (2D)
- Catania (2D)
- Venice (2D)
- Verona (2D)
- Brescia (2D)
- Ravenna (2D)
- Rimini (2D)
Japan (20 so far):
- Tokio (2D)
- Yokohama (2D)
- Osaka (2D)
- Nagoya (2D)
- Sapporo (2D)
- Kobe (2D)
- Fukuoka (2D)
- Kawasaki (2D)
- Saitama (2D)
- Hiroshima (2D)
- Sendai (2D)
- Kitakyushu (2D)
- Chiba (2D)
- Sakai (2D)
- Niigata (2D)
- Hamamatsu (2D)
- Shizuoka (2D)
- Okayama (2D)
- Kumamoto (2D)
Luxemburg (1):
- Luxemburg (2D)
Netherlands (5):
- Amsterdam (2D)
- Rotterdam (2D)
- The Hague (2D)
- Utrecht (2D)
- Eindhoven (2D)
Poland (2):
- Warsaw (2D)
- Krakow (2D)
Portugal (3):
- Lisbon (2D)
- Porto (2D)
- Amadora (2D)
Romania (1):
- Bucharest (2D)
Spain (14):
- Madrid (2D, Flyover)
- Barcelona (2D, Flyover)
- Valencia (2D)
- Seville (2D)
- Zaragoza (2D)
- Malaga (2D)
- Palma De Mallorca (2D)
- Bilbao (2D)
- Alicante (2D)
- Cordoba (2D)
- Valladolid (2D)
- Gijon (2D)
- Coruna (2D)
- Granada (2D)
Sweden (4):
- Stockholm (2D, Flyover)
- Gothenburg (2D)
- Malmo (2D)
- Uppsala (2D)
Switzerland (4):
- Zurich (2D)
- Geneva (2D)
- Basel (2D)
- Bern (2D)
Turkey (1):
- Istanbul (2D)
Ukraine (1):
- Kiev (2D)
United Kingdom (18):
- London (2D, Flyover)
- Birmingham (2D, Flyover)
- Glasgow (2D)
- Liverpool (2D)
- Leeds (2D)
- Sheffield (2D)
- Edinburgh (2D)
- Bristol (2D)
- Manchester (2D, Flyover)
- Leicester (2D)
- Coventry (2D)
- Cardiff (2D)
- Bradford (2D)
- Belfast (2D)
- Kington (2D)
- Southampton (2D)
- Newcastle (2D)
- York (2D)
USA (65 so far):
- New York (2D, Flyover)
- Los Angeles (2D, 3D, Flyover)
- Chicago (2D, 3D, Flyover)
- Houston (2D, 3D, Flyover)
- Philadelphia (2D, Flyover)
- Phoenix (2D, 3D, Flyover)
- San Antonio (2D)
- San Diego (2D, 3D, Flyover)
- Dallas (2D, Flyover)
- San Jose (2D, 3D, Flyover)
- Jacksonville (2D)
- Indianapolis (2D)
- San Francisco (2D, 3D, Flyover)
- Austin (2D, 3D, Flyover)
- Columbus (2D)
- Fort Worth (2D, Flyover)
- Charlotte (2D)
- Detroit (2D)
- El Paso (2D)
- Memphis (2D, 3D, Flyover)
- Baltimore (2D)
- Boston (2D, 3D, Flyover)
- Seattle (2D, 3D, Flyover)
- Washington D.C. (2D)
- Nashville (2D)
- Denver (2D, 3D, Flyover)
- Louisville (2D)
- Milwaukee (2D)
- Portland (2D, Flyover)
- Las Vegas (2D, 3D, Flyover)
- Oklahoma City (2D)
- Albuquerque (2D)
- Tucson (2D)
- Fresno (2D)
- Sacramento (2D, 3D, Flyover)
- Long Beach (2D, 3D, Flyover)
- Kansas City (2D)
- Mesa (2D)
- Virginia Beach (2D)
- Atlanta (2D, 3D, Flyover)
- Colorado Springs (2D)
- Omaha (2D)
- Raleigh (2D)
- Miami (2D, 3D, Flyover)
- Cleveland (2D)
- Tulsa (2D)
- Oakland (2D, 3D, Flyover)
- Minneapolis (2D)
- Wichita (2D)
- Arlington (2D, Flyover)
- Bakersfield (2D)
- New Orleans (2D, 3D, Flyover)
- Honululu (2D)
- Anaheim (2D)
- Tampa (2D)
- Aurora (2D)
- Santa Ana (2D)
- Saint Louis (2D)
- Pittsburgh (2D)
- Corpus Christi (2D)
- Beverly Hills (2D, 3D, Flyover)
- Century City (2D, 3D, Flyover)
- Cupertino (2D, 3D, Flyover)
- Redmond (Flyover)
- Santa Monica (2D, 3D, Flyover)
