The highest pedestrian bridge in Singapore looks like a series of undulating waves rising between two public parks.

A Buddhist theme park brings you a Buddhist version of Hell.

Singapore's landscaping project is home to 18 incredible Supertrees.

This vestige of Seychelles’s colonial past now resides in a busy intersection and didn’t chime for its first 96 years.

A British general, a suggestive tree, a map of paradise.

This statue of the famed author, actor, and journalist is made entirely of screw-nuts.

Different sections of the Zemun Fortress were built in the 14th and 15th century as a response to the advance of the Ottoman Empire.

The unusual sculptures are believed to be powerful political symbols.

A towering spire in the fortress of Kalemegdan honors the victorious armies of Serbia during their struggles against the Ottoman Empire.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

The rocks around this mountain are filled with so many carvings that the area became known as the "open library."

Lions carved into the rockface adorn these two tombs built into the mountains of Dadan.

Once a major stop on the Hejaz Railway, this desert station (complete with steam locomotive) has been abandoned for decades.

Within the Saudi Arabian desert lies a 2,000-year-old ghost town made of stone and mud.

More than 100 monumental tombs carved into rock are preserved at this ancient Nabataean site in the Arabian Desert.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

The smaller of the three towers of San Marino is a former prison inaccessible from the ground level.

This Transylvanian church has changed its denomination four times.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

This fountain pays homage to Qatar's history of pearling, the primary industry before oil.

Qatar's oldest market can trace its origins back more than a century.

This iconic clock tower is the largest in the Philippines.

Bohol's mysterious brown hills.

A patch of Philippines forest devoted to saving the lives of an emotionally sensitive species of googly-eyed primates.