Subject
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Railroad bridges
7
Asylums
6
Barracks
6
Electric railroads
5
Shrines
5
Forts & fortifications
4
Post offices
4
City & town halls
3
Convents
3
Galleries & museums
3
Hospitals
3
Libraries
3
City walls
2
Lifeboats
2
Markets
2
Mills
2
Wetlands
2
Archaeological sites
1
Estates
1
Meta Sudans (Rome, Italy)
1
Racetracks
1
Universities and colleges
1