The expansion will feature a variety of shops, restaurants and leisure amenities and also includes the Ibis Styles Araneta City within the development.

The redevelopment plan also included the "Manhattan Mall", a 200,000 m2 (2,200,000 sq ft) mixed-use development with retail and residential components, which became the present Manhattan Gardens complex, a 400-room business hotel now known as the Novotel Manila Araneta City, and the "Manila Tower", a 300 m (984.3 ft) planned mixed-use tower with communication facilities, as part of the Araneta Center Master Plan in the year 2000, and was established in 2002, under a ₱66.25 billion (US$1.25 billion) budget.

For the full commencement of the project, the Araneta Group tapped Felino Palafox of Palafox Associates and Sudhakar Thakurdesai of RTKL Associates as the main architects and urban planners of the project, along with the Deshazo Starek and Tang (now Deshazo Group), Jones Lang LaSalle Incorporated and Colliers International as main consultants of the master plan.

The mall became the first property to break ground under the Araneta Center Redevelopment Plan, in which the project broke ground and commenced construction in October 2002[7] before the mall opened on October 15, 2004, tapping CE Construction Corporation as the project's general contractor.

Gateway 1 also highlights a Fabergé egg-inspired glass pavilion located along General Aguinaldo Avenue.

[27] Megawide Construction Corporation served as the general contractor of the project, while the Araneta Group tapped Aidea as the main architectural firm.

[29][30] The New Gateway Mall officially topped off on February 11, 2020,[29][31] and is originally scheduled for completion in the 4th quarter of 2020, to commemorate the 60th anniversary opening of the Araneta Coliseum.

[34][35] The Gateway Mall 2 features a nature-inspired design within the mall's interiors and exteriors, which can be seen in various areas around the mall such as The Lagoon fountain, an indoor water feature surrounded by the Lagoon Restaurant Collection, a restaurant row located at the Ground floor; a Coliseum Plaza filled with restaurants at the Ground Level located adjacent to the Smart Araneta Coliseum Red Gate entrance; and a 700 m2 (7,500 sq ft) activity area atrium with ceiling-installed LED screens, known as the Quantum Skyview located within Upper Ground-B Level.

[36][32] The mall also includes an Asian Village food hub for restaurants based within the Asia-Pacific region, occupying the 2nd floor; while the third floor houses a Pop Culture Center housing a K-Pop and P-Pop themed Cafe, and a Bowling Center named Paeng's Gateway Bowl.

[19][37][36][34] The Ibis Styles Hotel's restaurants, StrEats and Le Bistro, are also accessible within the mall's walkways.

[38][39] The new mall has 200,000 m2 (2,200,000 sq ft) of total retail space and is set to house over 500 shops, including over 100 food and beverage shops and restaurants, and will also include retail, dining, nightlife, and leisure spaces, along with a supermarket, with Shopwise occupying the lower ground floor of the mall, as the supermarket transfers in a new location, occupying at least 3,760 m2 (40,500 sq ft) of retail space in the mall, which opened on July 28, 2023, which was followed by the opening of Sunnies Studios, Daiso, and Foot Locker.

[49][50][51] On May 23, 2023, the Araneta Group and Wolfgang's Steakhouse Philippines signed a contract to launch a its fifth branch, located in the mall's upper ground level.

[52][53][54] On 25 August 2023, Wolfgang's unveiled their preview display to the upcoming branch in the mall up to 3 September 2023,[55] while Shake Shack simultaneously opened their latest branch located at the Coliseum Plaza, and serves as the first "stadium shack" to open in the country and the Asia-Pacific Region.

The Filipino-themed food hall will various local dishes in the country, in association with Claude Tayag, which also has an establishment in the alley named Bale Dutung.

[59][60] The World Kitchens is an food hall set to be opened within early 2025, designed by Singaporean businessman Andrew Tan Hock Lai and features 15 show kitchens which serves a variety of international cuisines, such as Filipino, Singaporean, Hong Kong, Japanese, Indian, Italian, and Spanish cuisines.

The restaurant took inspiration of worldwide comfort food concepts within a total floor area of 2,500 m2 (27,000 sq ft) and is capable of housing 700 guests.

The church was inspired from the Mitre and features an all-white architectural design, with its curved interiors inspired from the Oculus building in New York City, which stretches upwards to the sky, and features high ceilings and modern church glass windows emphasizing natural light.

[71] The Gateway Cineplex features an upward wave ceiling design within the main lobby, while the cinemas are also equipped with Dolby Atmos technology with La-Z-Boy seats.