Subject
Historic buildings
321
Bridges
214
Churches
206
Streets
175
Castles & palaces
147
Cathedrals
146
Rivers
140
Dwellings
122
Towers
121
Lakes & ponds
116
Causeways
106
Harbors
85
Abbeys
78
Monuments & memorials
69
Architecture
67
Boats
66
Islands
63
Cliffs
61
Piers & wharves
60
Mountains
58
Ships
57
Hotels
55
Universities & colleges
55
Railroads
51
Waterfalls
49
Crosses
42
Round Towers
41
Plazas
39
Monasteries
38
Parks
36
Bays (bodies of water)
34
Protestant churches
34
Roads
33
Beaches
32
Capes (Coasts)
31
Ruins
29
Valleys
25
Railroad stations
21
Cemeteries
20
Schools
20
Villages
17
Courthouses
15
Steamboats
15
Canals
14
Catholic churches
11
Caves
11
Gardens
11
Tombs & sepulchral monuments
10
Walkways
9
Meadows
8
more ...