The last, three-block stretch of the Chicago Riverwalk downtown is set to open this weekend.

It runs along Wacker Drive from LaSalle Street to Lake Street and includes a series of floating wetland gardens.

The 1.25-mile promenade along the south bank of the river cost approximately $108 million and was paid for mostly through federal funds.

The new sections, with the names city officials have given them:

• The Water Plaza, between LaSalle Street and Wells Street, a water feature for children and families.

A new fountain between LaSalle Street and Wells Street, part of the final phase of the Riverwalk. | Santiago Covarrubias / Sun-Times

A new fountain between LaSalle Street and Wells Street, part of the final phase of the Riverwalk. | Santiago Covarrubias/Sun-Times

• The Jetty, between Wells Street and Franklin Street, which city officials say offers “a series of piers and floating wetland gardens with interactive learning about the ecology of the river, including opportunities for fishing and identifying native plants.”

• The Riverbank, between Franklin Street and Lake Street, has an accessible walkway between lower and upper Wacker Drive and a public lawn.

Crews working Wednesday near Franklin Street on the Chicago Riverwalk. | Santiago Covarrubias / Sun-Times

Crews working Wednesday near Franklin Street on the Chicago Riverwalk. | Santiago Covarrubias/Sun-Times

The Chicago Riverwalk under the the Franklin Street bridge. | Santiago Covarrubias / Sun-Times

The Chicago Riverwalk under the the Franklin Street bridge. | Santiago Covarrubias/Sun-Times

Work continued Wednesday on a ramp near Franklin Street, part of the final phase of the Riverwalk. | Santiago Covarrubias / Sun-Times

Work continued Wednesday on a ramp near Franklin Street, part of the final phase of the Riverwalk. | Santiago Covarrubias/Sun-Times