Elder Scrolls IV: Oblivion is a first-person perspective fantasy computer role-playing game set in a vast 3D world with an open-ended storyline that allows the player the freedom to pursue the main quest, side quests, or simply explore the world. The game is set in a different geographic location from the previous in the series (Elder Scrolls III: Morrowind) and in general the architecture and wildlife is more medieval and real-world. The fantasy game art is vastly improved, however, and at the time of its release wowed the world with its realism and attention to physics in its interactivity.
This Elder Scrolls IV: Oblivion fantasy art / game art page has images from a graphically modified game. For an overview of the major changes, click here.
From the Unique Landscapes Wiki:
Unique Landscapes (short: UL) is based on the vision of a diversified and beautiful Cyrodiil. Imagine a world where exploring not only means to find new enemies and treasures but to enjoy gorgeous landscapes, a world where every step could lead to a new and unique visual experience. That is the Cyrodiil UL is working on.
To achieve a goal that huge, the UL project consists of multiple single mods. Each mod modifies a part of Cyrodiil, following a single theme. Usually UL mods get developed completely independently from each other. This way each modder has a maximum of freedom to work on his or her vision, so every UL mod gets its own style and contributes to the diversification of Cyrodiil.
Beaches of Cyrodiil: Lost Coast, the ninth chapter in the Unique Landscapes series, is a breathtaking swamp southeast of Skingrad. Its shallow, murky waters and ancient deep green trees add to the mystery of the primeval swamp. The large basin that houses the Everglade overlooks an ancient ayeleid ruin, and further beyond, a deep gorge carved by the mighty Ferid river. The Beaches of Cyrodiil: Lost Coast is the headwater for the Ferid, and home to an abundance of flora and fauna. It is a miniature ecosystem in its own. There is nowhere else like it in all of Tamriel. Furthermore, the Ferid Gorge has been added. It is a deep gorge lined with steep, gigantic mossy rock walls. The ancient trees that sprout from cracks in the wall overlook the pristine waters like ancient guardians. The Granite cliff, measuring over 70 feet tall, is a unique landmark definitely worth a visit. The Cyrodiil Travelers' Guild gives it a five star rating and adds that this is another must-see location out in the wilderlands. The Fighters' Guild in Skingrad is another group that uses the area; in this case, it is to train their recruits in cliff climbing. This is a very scenic landscape to visit, so make plans to see it while in the area.
One of the interesting locations added in this UL project is Treestump Cave, which opens into a large cavern containing an Ayleid ruin and Ayleid Well.