Subject
Historic buildings
120
Castles & palaces
70
Churches
67
Harbors
47
Rivers
47
Cathedrals
40
Dwellings
38
Bridges
32
Streets
32
Piers & wharves
28
Parks
23
Abbeys
22
Catholic churches
20
Plazas
17
Ships
13
Towers
13
Beaches
12
Schools
11
Railroads
10
Convents
8
Monasteries
8
Golf
7
Hotels
7
Courthouses
6
Railroad stations
6
Ruins
5
Antiquities
4
Bays (bodies of water)
4
Boats
4
Railroad bridges
4
Capes (Coasts)
3
Factories
3
Mountains
3
Roads
3
Steamboats
3
City & town halls
2
Markets
2
Monuments & memorials
2
Presbyterian churches
2
Round Towers
2
Universities & colleges
2
Valleys
2
Villages
2
Caves
1
Cliffs
1
Crosses
1
Forts & fortifications
1
Libraries
1
Lighthouses
1
Police stations
1
more ...