Gardens By The Bay, which opened yesterday, was designed by British architects and built on reclaimed land in the Marina Bay area.

It includes 18 man-made trees the size of skyscrapers that are connected by an aerial walkway.

These 50m (160ft) ‘vertical gardens’ have tropical climbing flowers and lit at night. There is also a conservatory complex made up of two giant biomes containing Mediterranean and tropical plants and flowers.

Grant Associates, a landscape architecture firm based in Bath, Somerset, led the project.

‘Our brief was to create the most amazing tropical gardens in the world, incorporating cutting-edge environmental design and sustainable development principles,’ said Andrew Grant, a director of the firm.

‘We had to factor in the challenges of the Singaporean climate and working on a reclaimed waterfront.’

The site will eventually grow from 55ha (134 acres) to 101ha (250 acres) and have three separate gardens – Bay South, Bay East and Bay Central. The former has been completed.

Dr Kiat W Tan, chief executive of Gardens By The Bay, said: ‘We are excited to finally share the treasures of this new garden with Singapore and the rest of the world.’