1970年代，為配合港島東人口發展和連接港島中心地帶，東區走廊被倡議並規劃、設計，因應第二期（太古城至筲箕灣段）的建造工程，一部分愛秩序灣被填海。1985年，為紀念和慶祝該段公路的落成和通車，啟用儀式由署理港督鐘逸傑於由前市政局同期建設、啟用的愛秩序灣小園地主持。2006年，小園地更名為「南安街休憩處」，東區走廊的開幕銘石也得以保留。休憩處為軸對稱設計的三角園地，兩個相扣的圓形下沉小廣場位於場地的南段，並被夾於天橋的出入樓梯之間。其中一個小廣場被3米高的墻身半包圍，凹凸有序的裝飾成為隔音元素，減弱毗鄰巴士總站的噪音，並保證一定的安全性和私密性。廣場以外的兩側留下寬闊的通道，沿途設置長坐凳，方便疏導大量往來巴士總站和地鐵站的人流。

In the 1970s, the Eastern Corridor was proposed and planned to accommodate the population development of Hong Kong Island East and to connect it to the heart of Hong Kong Island. Part of Aldrich Bay was reclaimed for the construction of Phase II (Section between Taikoo Shing and Shau Kei Wan) of the expressway. In 1985, to commemorate and celebrate the completion and opening of Phase II, an opening ceremony was held and officiated by the Acting Governor Sir David Akers-Jones at Aldrich Bay Amenity Areas, which was completed by the former Urban Council around the same time. The ceremony memorial plaque is preserved in this small garden, which was renamed Nam On Street Sitting-out Area in 2006. The open space is an equilateral triangle-shaped garden with two circular sunken piazzas interlocked in the southern section of the site, sandwiched between the footbridge staircases. One of the piazzas is semi-enclosed by a 3-metre-high wall installed to reduce the noise of the adjacent bus terminus, while ensuring safety and privacy. Wide aisles span on both sides outside the piazzas with long benches along the way to better circulate crowds to and from the bus terminus and MTR station.