Tokyo's second-tallest building complex opened for business on Wednesday, presaging a series of development projects ahead of the 2020 Olympic Games.

Developed by Mori Building Co., the 52-story, 247-meter Toranomon Hills complex is topped by Hyatt Hotels Corp.'s first Andaz brand hotel in Japan, a boutique inn aimed at creative clients.

The opening of the 164-room Andaz was made possible thanks to signs of economic revitalization in Tokyo, Hyatt Chief Executive Officer Mark Hoplamazian said on Monday.