Tiansheng Sanqiao (Three Natural Bridges) Glass Observatory (天生三桥玻璃观景台)

The short answer: The Three Natural Bridges (Tiansheng Sanqiao) at Wulong are giant natural karst stone bridges spanning a vast sinkhole, part of the Wulong Karst World Heritage area. The glass observation platform (玻璃眺台) is a large cantilevered glass deck built at an elevation of about 1,128 m, projecting around 280 m above the pit floor so visitors look straight down into the gorge. Designed by Tsinghua, it lets you view the bridges, sinkhole and valley below through the glass floor.

At a glance

Where it is: Inside the Tiansheng Sanqiao (Three Natural Bridges) scenic area, Xiannü Town, Wulong District, Chongqing
How long to allow: 2–3 hours (including the Three Natural Bridges area)
Ticket & access: The glass observatory itself charges ~¥25 per person (opening about 9:00–16:30). Entry to the outer Tiansheng Sanqiao scenic area is separate and a combined adult ticket

What it is

The Three Natural Bridges (Tiansheng Sanqiao) at Wulong are giant natural karst stone bridges spanning a vast sinkhole, part of the Wulong Karst World Heritage area. The glass observation platform (玻璃眺台) is a large cantilevered glass deck built at an elevation of about 1,128 m, projecting around 280 m above the pit floor so visitors look straight down into the gorge. Designed by Tsinghua, it lets you view the bridges, sinkhole and valley below through the glass floor.

Why it's worth the stop

Cantilevered glass viewing deck ~280 m above the sinkhole
Three massive natural karst bridges of Wulong (a World Heritage area)
Dramatic vertical views down into the gorge

Getting there

From Chongqing take the intercity rail to Wulong (~2h) then a connecting bus/taxi to Xiannü Town, which is a short hop from the scenic area's transfer centre.

Tickets and opening hours

The glass observatory itself charges ~¥25 per person (opening about 9:00–16:30). Entry to the outer Tiansheng Sanqiao scenic area is separate and a combined adult ticket (incl. shuttle + elevator) is about ¥155 in peak season (Mar–Oct), with lower child/senior rates.

Practical details

Where it is: Inside the Tiansheng Sanqiao (Three Natural Bridges) scenic area, Xiannü Town, Wulong District, Chongqing
How long to allow: 2–3 hours (including the Three Natural Bridges area)
Separate ticket for the glass deck from the main park entry — buy both on site or online.
Not for those with a strong fear of heights; the floor is fully transparent.