Singapore is one of the world's most architecturally ambitious cities — a place where colonial-era neoclassical civic buildings stand alongside futuristic glass conservatories, where 1930s art deco housing estates share neighbourhoods with biophilic residential towers draped in living plants, and where the world's most recognisable resort hotel has a rooftop shaped like a boat cantilevering 65 metres over three 55-storey towers. The city's built environment is the product of an extraordinarily concentrated period of development — Singapore became an independent nation-state in 1965 with little colonial-era infrastructure and has since constructed, destroyed, and reconstructed itself at a pace that has made it one of the most discussed cities in global architecture. This guide covers the buildings that define Singapore's architectural identity.

Book your flights to Singapore and plan your architecture walk. Find a hotel in the Marina Bay area for the most convenient access to the city's architectural centrepieces.

The most recognised building in Singapore and one of the most photographed in the world. Marina Bay Sands was designed by Israeli-Canadian architect Moshe Safdie and opened in 2010. The concept — three 55-storey hotel towers leaning slightly outward at the base and supporting a 340-metre-long rooftop SkyPark shaped like a giant ship — was considered almost unbuildable when first proposed. The engineering challenge of the cantilever (which extends 65 metres beyond the northernmost tower) required innovative structural solutions that pushed the limits of contemporary construction. The SkyPark houses an infinity pool, restaurants, a jogging track, and public observation decks. The building's base — a sprawling plinth housing the Shoppes at Marina Bay Sands, the ArtScience Museum, and multiple entertainment venues — is equally ambitious in scale.

Gardens by the Bay, spanning 101 hectares on reclaimed land along the Marina Bay waterfront, represents Singapore's most ambitious statement about its identity as a "City in a Garden." The master plan was developed by British architecture firm Wilkinson Eyre and landscape architecture company Grant Associates. The project's defining elements are the 18 Supertrees — vertical garden structures between 25 and 50 metres tall that function simultaneously as aesthetic sculptures, solar energy harvesters, and environmental systems venting the conservatories below. The two glass conservatories — the Flower Dome (the world's largest glass greenhouse) and the Cloud Forest — demonstrate how architecture can integrate climate control, horticultural display, and visitor experience at an extraordinary scale.

Jewel Changi Airport, opened in 2019 and designed again by Moshe Safdie, is a glass-and-steel toroidal dome connecting Terminals 1, 2, and 3 of Changi Airport. Its centrepiece is the HSBC Rain Vortex — the world's tallest indoor waterfall at 40 metres — which falls from the apex of the dome's oculus into a lush indoor forest below. The Shiseido Forest Valley surrounding the waterfall is a 2,500-square-metre multi-storey indoor garden. The building simultaneously functions as a premium retail and dining destination, a public attraction, and an airport terminal — a genuinely new building typology that Singapore has largely invented.

The Esplanade — Theatres on the Bay, designed by Singapore's DP Architects in collaboration with Michael Wilford & Partners, opened in 2002. The building's two domed shells are covered in approximately 7,000 aluminium sunshades in a pattern that earned it the popular nickname "The Durian" — a reference to Singapore's famous spiky fruit. The design was intentional: the triangular aluminium shading elements were calibrated to allow diffused natural light into the building's glass facades while blocking direct solar heat gain — solving a genuine tropical climate engineering problem through decorative means. The building houses a 1,800-seat concert hall and a 2,000-seat lyric theatre, and is the most important performing arts venue in Singapore.

The National Gallery Singapore, opened in 2015, occupies two of Singapore's most historically significant colonial buildings — the former Supreme Court (1939) and the former City Hall (1929) — connected by a contemporary glass-and-steel atrium roof designed by Studio Milou Architecture. The project is one of the finest examples of adaptive reuse in Southeast Asia: the colonial architecture is meticulously preserved, the interior connections are clearly modern, and the rooftop atrium floods the previously disconnected buildings with natural light while creating new gallery spaces. The result houses the world's largest public collection of Singapore and Southeast Asian art.

The Interlace, completed in 2013 and designed by Ole Scheeren (formerly of OMA/Rem Koolhaas), is a residential complex of 31 stacked apartment blocks arranged in a hexagonal interlocking pattern that challenges the conventional Singapore residential tower typology. Rather than vertical towers, the blocks are laid horizontally and stacked at alternating angles across eight layers, creating 112 sky gardens, communal terraces, and a dramatically different relationship between architecture and landscape. Winner of the World Building of the Year at the World Architecture Festival 2015.

Designed by WOHA Architects and opened in 2013, the Parkroyal Collection Pickering on Upper Pickering Street is Singapore's most celebrated example of biophilic architecture — a hotel where terraced gardens cascade down the building's facade, blending the boundary between built structure and landscape. The hotel's green plot ratio (the area of planting relative to the site area) exceeds 100%, meaning the building contains more planting than the land it stands on. The hotel is widely studied internationally as a model for integrating nature into high-density urban buildings.

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