The grounds of the Marland Mansion are currently composed of 30 acres (12 ha) of gardens, lakes and ancillary buildings spread throughout the estate.
The original buildings were designed to complement the main house with rough-hewn stone facades and red clay tile roofs.
Lydie's Cottage was originally the chauffeur's quarters with garage space attached for the Marland's carriages and cars.
Several architectural elements used in the mansion can be found in the cottage including a wood beam ceiling and a fish-scale stone floor in the entry.
The house was remodeled by Forsyth with the addition of a bedroom and bathroom in the former carriage area, and the Marlands moved-in upon the sale of the mansion in 1941.
E.W. Marland died here six months later of a heart condition, while Lydie Marland continued to live in the house, off and on, until her death in 1987.
The cottage today contains the Marland Family Exhibit, that includes photos and artifacts from the family's presence in Pennsylvania and Oklahoma.

South of the cottage, is the Artist Studio featuring a two-story peaked roof structure on the south and north, with two one-story galleries and an arched walkway in between.
Built for Jo Davidson, sculptor of the Marland family statues, the beams of the studio were recycled from one of Marland's first oil derricks.
The south wing houses the Bryant Baker Gallery featuring 44 bronze and plaster maquettes and busts of Bryant Baker's work.
Bryant Baker was the sculptor of the Pioneer Woman Statue, which was commissioned by Marland and is located in Ponca City.
Also, a room in the gallery displays information and drawings of the architect, John Duncan Forsyth, who designed the estate, as well as many other homes in Ponca City and Tulsa.
The Oil Museum is located in the north wing of the Artist Studio and showcases the history of the Marland Oil Company in the early 20th-century.
The studio is connected to the mansion by a tunnel via the Boat House.

The Boat House is the location of a large underground wine cellar that is accessed by a safe door.
It also functioned as a storage area for the boats that were used for the enjoyment of guest and family.
Once on the edge of one of five lakes on the estate, this body of water along with three other lakes, and the T-shaped Olympic-sized pool, were filled in by a successive owner.
Lake Whitemarsh is the only remaining lake, and named after Marland's yacht, which in turn was named for a lake in Marland's hometown of Pittsburgh, Pennsylvania.
The grounds of the Marland Mansion are currently composed of 30 acres (12 ha) of gardens, lakes and ancillary buildings spread throughout the estate. The original buildings were designed to complement the main house with rough-hewn stone facades and red clay tile roofs. Lydie's Cottage was originally the chauffeur's quarters with garage space attached for the Marland's carriages and cars. Several architectural elements used in the mansion can be found in the cottage including a wood beam ceiling and a fish-scale stone floor in the entry. The house was remodeled by Forsyth with the addition of a bedroom and bathroom in the former carriage area, and the Marlands moved-in upon the sale of the mansion in 1941. E.W. Marland died here six months later of a heart condition, while Lydie Marland continued to live in the house, off and on, until her death in 1987. The cottage today contains the Marland Family Exhibit, that includes photos and artifacts from the family's presence in Pennsylvania and Oklahoma.
South of the cottage, is the Artist Studio featuring a two-story peaked roof structure on the south and north, with two one-story galleries and an arched walkway in between. Built for Jo Davidson, sculptor of the Marland family statues, the beams of the studio were recycled from one of Marland's first oil derricks. The south wing houses the Bryant Baker Gallery featuring 44 bronze and plaster maquettes and busts of Bryant Baker's work. Bryant Baker was the sculptor of the Pioneer Woman Statue, which was commissioned by Marland and is located in Ponca City. Also, a room in the gallery displays information and drawings of the architect, John Duncan Forsyth, who designed the estate, as well as many other homes in Ponca City and Tulsa. The Oil Museum is located in the north wing of the Artist Studio and showcases the history of the Marland Oil Company in the early 20th-century. The studio is connected to the mansion by a tunnel via the Boat House.
The Boat House is the location of a large underground wine cellar that is accessed by a safe door. It also functioned as a storage area for the boats that were used for the enjoyment of guest and family. Once on the edge of one of five lakes on the estate, this body of water along with three other lakes, and the T-shaped Olympic-sized pool, were filled in by a successive owner. Lake Whitemarsh is the only remaining lake, and named after Marland's yacht, which in turn was named for a lake in Marland's hometown of Pittsburgh, Pennsylvania.
E. W. Marland Mansion