Possible Maya bridge at Yaxchilan

Possible remnant of Mayan bridge in Usumacinta River at Yaxchilan

Structures at the banks of Usumacinta River and in the middle of it hint at the existence of the longest bridge of the ancient world. The bridge was approximately 200 m long and had two pylons in the river.

Dragon Bridge in Da Nang

Dragon Bridge in Da Nang

Landmark bridge, constructed in 2012. The bridge is adorned with a giant sculpture of dragon that every evening at 9 PM spews fire.

Chua cau (Japanese Bridge)

Chùa cầu - Japanese Bridge

Historical covered bridge with a Buddhist temple at one end of the bridge. The bridge was constructed by a local Japanese community in 1593.

Vịnh Mốc tunnels

Entrance in Vịnh Mốc tunnel

Some 2 km long system of tunnels in the depth of some 30 m where approximately 60 families lived during the Vietnam War in 1967 – 1972.

Củ Chi tunnels

One of entrances in Củ Chi tunnels, Vietnam

121 km long system of tunnels and underground rooms created for defensive purposes in the late 1960s – 1970s.

Ara Metua – ancient Polynesian road

Side road to Harerangi joins to Ara Metua, Cook Islands

Ancient, approximately 29 km long ancient road, located inwards from the present road. Until the middle of the20th century road, for the most part, was paved with basalt and coral slabs well fitted together, in villages there was curbing as well. The road served as the central element in the spiritual, administrative, and economical life of the island. Possibly built as early as around 1050 AD.