The Seine is a 777 km river in northern France.

In London Labour and the London Poor edition: 

Phase 1

See COVE Master Map entry: https://editions.covecollective.org/place/scarborough

In London Labour and the London Poor:

Experience of a Running Patterer. (Volume 1)

Saxony is a state in Germany. Its capital is Dresden.

In London Labour and the London Poor edition: 

Phase 1

Sardinia is an island in the Mediterranean Sea, and part of Italy.

In London Labour and the London Poor:

Exhibitor of Mechanical Figures. (Volume 3)

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

Saffron Hill is a street in the modern borough of Camden (London, England), named after a historic estate used for the growing of saffron. In the mid-19th century, Saffron Hill was a poor neighbourhood and is the site of Fagin's Den in Oliver Twist (1837) by Charles Dickens.

In London Labour and the London Poor edition:

Phase 1 

Sadler's Wells Theatre is a performing arts venue in Clerkenwell (London, England). There has been a theatre on the site since 1683 and the current building is the sixth. In the 19th century, an Aquatic Theatre, using a large tank of water, was constructed on the site. After a decline in the first half of the 19th century, the theatre gained popularity under the leadership of the manager Samuel Phelps and performances of Shakespeare at the theatre.

In London Labour and the London Poor:

Statement of a Beggar. (Volume 1)

Russell Square is a garden square in Bloomsbury, in the modern borough of Camden (London, England). It was constructed in the early 19th century and was typically occupied by upper-middle-class families.

In London Labour and the London Poor edition:

Phase 1

The Royal Exchange is a centre of commerce in the City of London (London, England). It was founded in the 16th century by the merchant Sir Thomas Gresham. The steps of the Exchange are the site of royal proclamations read to the City, such as the death of a monarch. The current building on the site was opened in 1844 after the preceding building burned down. 

In London Labour and the London Poor:

Of the Old Clothes Exchange. (Volume 2)

Of the Street-Sellers of Petticoat and Rosemary-Lanes. (Volume 2)

Rouen is a city in Normandy, France.

In London Labour and the London Poor:

Bone-Grubbers and Rag-Gatherers. (Volume 2)

The Blackfriars Rotunda was a building in Southwark, in the modern borough of Southwark, London, in various iterations from 1787 to 1958. It was originally a museum that housed the natural history and ethnographic Leverian collection and was later used as a music hall, a centre for radical meetings for the Rotunda radicals group, and a pub.

In London Labour and the London Poor:

The Street Conjurer. (Volume 3)