Subject
Historic buildings
313
Bridges
207
Churches
201
Streets
169
Cathedrals
145
Castles & palaces
139
Rivers
138
Towers
120
Dwellings
117
Lakes & ponds
112
Causeways
105
Harbors
84
Abbeys
78
Architecture
67
Monuments & memorials
67
Cliffs
61
Islands
61
Piers & wharves
60
Boats
58
Ships
56
Mountains
55
Universities & colleges
55
Hotels
51
Railroads
50
Waterfalls
48
Crosses
41
Round Towers
41
Monasteries
38
Plazas
38
Parks
35
Bays (bodies of water)
34
Protestant churches
34
Beaches
31
Capes (Coasts)
31
Roads
30
Ruins
27
Valleys
25
Railroad stations
21
Cemeteries
20
Schools
20
Courthouses
15
Steamboats
15
Villages
15
Canals
14
Caves
11
Gardens
11
Tombs & sepulchral monuments
10
Catholic churches
9
Walkways
9
Meadows
8
more ...