One of the oldest temples in Ho Chi Minh City, dedicated to a deified Chinese military leader.

This French colonial post office is arguably the grandest in all of Southeast Asia.

Witnesses claim the Virgin Mary statue outside the church once mysteriously shed a single tear.

A memorial to the monk who set himself on fire to protest the persecution of Buddhists in Vietnam.

Ancient barriers wrap around what was once an important stop along the Silk Road.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

Light still pours into the ruins of this ancient Islamic observatory.

Once a bustling fishing port, this semi-ghost town is now more than 90 miles away from the shore.

The Avenue of Mausolea is a series of grand palatial tombs.

This odd 1930s shop remains stranded in time and shrouded in mystery.

A special train service transported Sydney's dead from this station to "Necropolis Receiving Houses" at Rookwood Cemetery.

The largest necropolis in the Southern Hemisphere.

Come for the flowers, stay for the bats!

This historic observatory contains the world's oldest refracting lens telescope.

This secret Australian garden was built on love after a man planted a random bulb he found in the ocean.

An ancient engraving by the Cammeraygal people was uncovered in the transformation of a North Sydney industrial site.

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

Artists and musicians now rule over this former rail station.

An artistic tribute to the famous singer, just around the corner from where he was born.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Dictionary Johnson’s favorite feline.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.