Subject
Historic buildings
46
Cathedrals
41
Streets
25
Churches
14
Piers & wharves
13
Rivers
12
Bridges
7
Ships
6
Waterfalls
6
Forts & fortifications
5
Universities and colleges
5
Castles & palaces
4
Parks
4
Walkways
4
Dwellings
3
Monuments & memorials
3
Steamboats
3
City & town halls
2
Harbors
2
Roads
2
Towers
2
Barracks
1
Boats
1
Catholic churches
1
Electric railroads
1
Estates
1
Hotels
1
Markets
1
Plazas
1
Presbyterian churches
1
Prisons
1
Schools
1