Subject
Historic buildings
406
Churches
322
Streets
313
Parks
274
Universities & colleges
265
Cathedrals
187
Harbors
183
Bridges
120
Castles & palaces
93
Monuments & memorials
88
Hotels
77
Cemeteries
75
Galleries & museums
59
Ships
58
Catholic churches
53
Steamboats
47
Gardens
45
Barracks
43
Piers & wharves
42
Hospitals
40
Roads
34
Libraries
33
Boats
30
Rivers
21
Bays (bodies of water)
20
Electric railroads
20
Convents
19
Dwellings
18
Plazas
17
Schools
16
Beaches
12
Railroads
12
Yachts
12
Railroad stations
10
Abbeys
9
Markets
8
Presbyterian churches
8
Towers
8
Antiquities
7
City & town halls
7
Crosses
7
Golf
7
Waterfalls
7
Asylums
6
Post offices
6
Islands
5
Lighthouses
5
Villages
5
Lakes & ponds
3
Prisons
3
more ...