Likely HM Prison Portland, a prison in The Grove on the Isle of Portland, Dorset, England. The prison was opened in 1848 as an adult convict prison. Convicts constructed and laboured at the man-made port, Portland Harbour, and the site was a tourist attraction for Victorian visitors. It later became a Borstal (youth detention centre) in 1921 and is currently used for both adult and youth offenders.

In London Labour and the London Poor:

MEETING OF TICKET-OF-LEAVE MEN (Volume 3)

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)

Porte Saint-Antoine was one of the gates of Paris, which guarded the Bastille. The final gate on the site was demolished in 1778.

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

Poland Street is a street in the Soho district of the City of Westminster.

In London Labour and the London Poor:

Of the Blind Street-sellers of Tailors’ Needles, etc. (Volume 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/piedmont-sardinia

In London Labour and the London Poor:

Gun-Exercise Exhibitor—One-legged Italian. (Volume 3)

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

In London Labour and the London Poor edition: 

Phase 1

See COVE Master Map entry: https://editions.covecollective.org/place/philadelphia-pennsylvania

In London Labour and the London Poor:

Of the Politics, Literature, and Amusements of the Jews. (Volume 2)

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)