Question: Chungking Mansions is a building located at 36–44 Nathan Road in Tsim Sha Tsui, Kowloon, Hong Kong, the unusual atmosphere of the building is sometimes compared to that of the former Kowloon Walled City, Kowloon Walled City was a largely-ungoverned densely-populated settlement in Kowloon City in which region?

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Kowloon City: Kowloon City () is an area in Kowloon, Hong Kong.  It is named after the Kowloon Walled City, and is administratively part of Kowloon City District.

Kowloon Walled City: Kowloon Walled City was a largely-ungoverned densely-populated settlement in Kowloon City in Hong Kong.  Originally a Chinese military fort, the Walled City became an enclave after the New Territories were leased to Britain by China in 1898.  Its population increased dramatically following the Japanese occupation of Hong Kong during World War II.  By 1990, the Walled City contained 50,000 residents within its 2.6 ha borders.  From the 1950s to the 1970s, it was controlled by local triads and had high rates of prostitution, gambling and drug abuse.

Clock Tower, Hong Kong: The Clock Tower is a landmark in Hong Kong.  It is located on the southern shore of Tsim Sha Tsui, Kowloon.  It is the only remnant of the original site of the former Kowloon Station on the Kowloon-Canton Railway.  Officially named Former Kowloon-Canton Railway Clock Tower (), it is usually referred to as the Tsim Sha Tsui Clock Tower () for its location.

Nathan Road: Nathan Road is the main thoroughfare in Kowloon, Hong Kong that goes in a south-north direction from Tsim Sha Tsui to Sham Shui Po.  It is lined with shops and restaurants and throngs with tourists, and was known in the post-World War II years as the Golden Mile, a name that is now rarely used.  It starts on the southern part of Kowloon at its junction with Salisbury Road, a few metres north of Victoria Harbour, and ends at its intersection with Boundary Street in the north.  Portions of the Kwun Tong and Tsuen Wan Lines (Prince Edward, Mong Kok, Yau Ma Tei, Jordan and Tsim Sha Tsui) run underneath Nathan Road.The total length of the Nathan Road is about 3.6 km .

Kowloon Walled City Park: The Kowloon Walled City Park () is a historical park in Hong Kong.  The Kowloon Walled City had been a military stronghold since 15th century due to its coastal location and was a centre of vice and crime until 1987.  Under the agreement between the Hong Kong Government and the PRC, the Kowloon Walled City was demolished in the 1980s while the indigenous buildings and features were preserved for incorporation in the new park.

Holt's Wharf: Holt's Wharf () was a godown terminal in Tsim Sha Tsui, Kowloon, Hong Kong in the 20th century.  It was set up in 1910 and jointly owned by British Swire Group and Blue Funnel Line.  It was located at the southeast seaside of Tsim Sha Tsui and the south of Signal Hill.  Since it was next to Tsim Sha Tsui KCR Station, it acted as a railway and freight logistics hub in Hong Kong.

Star Ferry Pier, Tsim Sha Tsui: Star Ferry Pier, Tsim Sha Tsui, or Tsim Sha Tsui Ferry Pier, is a pier located on reclaimed land at the southernmost tip of Tsim Sha Tsui on Kowloon Peninsula in Hong Kong.  It is commonly known as Star Ferry Pier (天星碼頭) in Tsim Sha Tsui.  Star Ferry operates the pedestrian ferry service across Victoria Harbour to Wan Chai and to Central on Hong Kong Island.  The location is identified as "Kowloon Point" in the franchise held by Star Ferry.

Kowloon Public Pier: Kowloon Public Pier () or Tsim Sha Tsui Public Pier () is a public pier in Tsim Sha Tsui, Kowloon, Hong Kong.  It approaches Hong Kong Cultural Centre and Victoria Harbour.  Any boat can freely park at the pier.

Chungking Mansions: Chungking Mansions is a building located at 36–44 Nathan Road in Tsim Sha Tsui, Kowloon, Hong Kong.  The building is well known as nearly the cheapest accommodation in Hong Kong.  Though the building was supposed to be residential, it is made up of many independent low-budget hotels, shops and other services.  The unusual atmosphere of the building is sometimes compared to that of the former Kowloon Walled City.

Tsim Sha Tsui: Tsim Sha Tsui (), often abbreviated as TST, is an urban area in southern Kowloon, Hong Kong.  The area is administratively part of the Yau Tsim Mong District.  Tsim Sha Tsui East is a piece of land reclaimed from the Hung Hom Bay now east of Tsim Sha Tsui.  The area is bounded north by Austin Road and in the east by Hong Chong Road and Cheong Wan Road.

Supporting paragraphs: Chungking Mansions Kowloon Walled City
Answer: Hong Kong