Promenade MRT station

Promenade Station (CC4/DT15) is an MRT Station in Singapore. It is an underground interchange station along Circle MRT Line and Downtown MRT Line. It is the deepest station in Singapore at below ground. The deepest platform is at Basement 7.
Unusual Layout.
It is the only station to have four separated stacked side platforms on its own levels -
This is due to lack of space and the tight corridor at Temasek Avenue area. The two levels were restricted (B3 and B5).