Avalon Willoughby West, Modern residential skyscraper in Downtown Brooklyn, United States.

AVA DoBro, also called Avalon Willoughby West or 100 Willoughby, is a 57-storey residential tower rising 182 metres in Downtown Brooklyn. Developed by AvalonBay Communities, it holds 826 units. Its construction added a new entrance to the Jay Street–MetroTech subway station, fitted with an elevator.

AVA DoBro topped out in July 2015, becoming Brooklyn's tallest building at 182 metres and surpassing 388 Bridge Street by 34 feet (10 m). It held that title only a few months before The Hub overtook it. The tower was developed by AvalonBay Communities with 826 units over 57 floors, and its construction added a new entrance, with elevator, to the Jay Street–MetroTech subway station.

The tower's name comes from its developer, AvalonBay Communities, which brands its New York rentals under the AVA name; the site is also known by its address, 100 Willoughby. As part of the project, a new entrance to the Jay Street–MetroTech station was built, fitted with an elevator, so subway access is part of the building itself.

The tower stands at 100 Willoughby in Downtown Brooklyn, and its new Jay Street–MetroTech subway entrance, with an elevator, is built into the development. The 826 apartments occupy 57 floors above that entrance.

As part of the development, a new entrance to the Jay Street–MetroTech subway station was built into the tower, and it includes an elevator. The topping-out in July 2015 made it Brooklyn's tallest building, 34 feet (10 m) above 388 Bridge Street, a title it held only until The Hub passed it a few months later.