There are 5 endless maps in the game.
Hougoumont is a very, very dark farmhouse, having a very dark tone of colors, setting a dreadful vibe. In the lore, the soldiers of Hougoumont fought to delay as much time possible for the zombies, in order for the rest of a nation's army to retreat. There are 3 playable nations, Prussia, France, and Britain.
There are some prominent features, such as the burnt down building, multiple buildings, a garden, and it being the largest endless map in the game, however most of the space is in the darkness.
A small village/farmhouse in Ligny, covered in smoke and fire indicating battle, with the overall tone of the map being a brown-ish orange, giving it an ominous, dark vibe. It is a relatively big map, offering the best amount of space, before Hougoumont. Based on 'The Battle Of Ligny', there are 2 nations playable here, Prussia and France.
A relatively small farmhouse set on a cloudy, rainy day. There is a pile of dead bodies in the middle of the map, assumed to be zombies. There is also some signs of broken walls and cannonballs, indicating some battle occured. It has a deep blue tone, setting a depressing vibe, fitting for an endless map. There are 2 playable nations. France and Britain
A small village set up in the Alps. It the smallest map, offering little to no leg room, resulting in a lot of close quarters combat. It is a very bright map, being one of 2-3 maps set during the day. There are 2 playable nations, Bavaria and Austria.
A snowy, cold, compact fortress set in Norway. It has a lot of deep blue tones along with red and white. This map is smaller than Tyrolean village, but offers more space in the center of the map. Due to the compactness, this is the only endless map that doesnt spawn runners. The only playable nation in this map is Danish.