Halcyon Tower

Halcyon Tower is a 26-story skyscraper located in downtown Newisle. At 153m tall, it is officially the tallest building in Newisle and the map.

Recognizable because of it's unique coloration and pure height, the tower is based on the Willis (Sears) tower, from Chicago, U.S.A, especially for the top segment, as well as Aura from Toronto, Canada. It has it's own subway station, Halcyon Station, underneath it.

Exterior
Halcyon Tower is built out of Gray Concrete & Cyan Stained Glass, a unique appearance for NewIsle and much of the map. It is designed as three "segments", with the first segment having 2 extending, smaller segments. The tower can be accessed through stairways leading to the second floor (The first floor is occupied by Halcyon Station). There is an outside deck-like area on the eastern and northern sides, which has seating areas and trees. There is a newspaper stand ran by the Newisle Times at the base. It is accessible from Castle Rd. to the east, and Redbridge Way to the west. There are 2 skybridges on the southern side, leading to Black Mesa tower, accessible from the main lobby and the third floor.

The roof of the building is angled, forming a diamond-like shape on the roof. The top of the building has two spires, both of which are 22m tall. At night, they output light blue beacons. There is a sign on the roof, telling the player there's only "two ways down from here".

Interior
The building consists of 27 stories, all of which are office spaces. The first floor is completely isolated from the rest of the building, holding Halcyon Station. In order to enter the building proper, the player must walk up one of two sets of ramps on the north or west sides. There is also an entrance to an inside staircase on the west side.

The second floor of the building is considered the 'main lobby', and includes seating areas & facts about the building. The south side of the lobby has a visible skybridge leading to the adjacent Black Mesa Corp. headquarters. There's a second skybridge leading to the third floor as well. There is one stairwell in the center allowing access to every floor. Starting on the third floor and ending on the seventeenth, there's a staircase on the southern side that is much more open.

The 25th floor is the last real floor, and can only be accessed through a secondary staircase to the side of the main stairwell. This last floor has a ladder leading to a very small 26th floor, which contains a single chest with an elytra. The roof can be accessed through a ladder next to this chest.

Halcyon Station
Halcyon Station is a subway station, located under the main Halcyon tower. The station is accessible through two entrances, one on the west and one on the east side. There is also a secondary entrance on the west side, altho this entrance leads to the secondary, underground line.

Halcyon Station hosts both the U-1 and U-3 (Yellow & Blue) lines. The upper U-1 station is larger, and includes two staircases to the sides leading to a sub-level with the U-3 line. The sub-level is much smaller. The U-1 line is bordered by Castle Centre Station, directly to the south, and Birch Shore station to the northwest. The U-3 line is bordered by Deadwolf Station to the west and Wave Market Station to the Northeast.