The Porte Saint-Martin is a monument in Paris, located at the site of the now-destroyed gate of Paris of the same name. The monument was built in 1674 and commemorates the victories of King Louis XIV.

In London Labour and the London Poor:

Acrobat, or Street-Posturer. (Volume 3)

Poplar is a district in the East End of London, in the modern borough of Tower Hamlets (London, England).

In London Labour and the London Poor edition: 

Phase 1

Playhouse Yard is a street in the City of London (London, England).

In London Labour and the London Poor:

Irish Lodging-houses for Immigrants. (Volume 1)

LONDON VAGRANTS. (Volume 3)

See COVE Master Map entry: https://editions.covecollective.org/place/piccadilly-london

In London Labour and the London Poor edition: 

Phase 1

Phil's buildings was the site of the old clothes exchange and general market in Houndsditch, in the City of London.

In London Labour and the London Poor:

Of the Old Clothes Exchange. (Volume 2)