Subject
Bridges
Streets
76
Railroads
60
Rivers
47
Historic buildings
21
Castles & palaces
19
Causeways
17
Mills
13
Parks
13
Piers & wharves
11
Railroad bridges
11
Lakes & ponds
10
Hotels
9
Capes (Coasts)
8
Abbeys
7
Islands
7
Waterfalls
5
Antiquities
4
Forts & fortifications
4
Roads
4
Valleys
4
Barracks
3
Birthplaces
3
Churches
3
Harbors
2
Steamboats
2
Cathedrals
1
Convents
1
Electric railroads
1
Mountains
1
Railroad stations
1
Shrines
1