Partially constructed notched burial plots are seen at the construction site of an underground tunnel designated for traditional Jewish burial at the Givat Shaul cemetery, on May 14, 2015, in Jerusalem, Israel. Underground cemetery being built by the Israeli Burial Society in Jerusalem due to a decrease in available land for traditional Jewish burials. (Photo by David Vaaknin/The Washington Post)

Ronda is a small Spanish town that it well known by many people around the world. It became a popular tourist destination due to its peculiar location. Some of its buildings are standing right next to the large cliff drop, making for a very scary sight, especially if you were to look down through one of their windows unaware of what kind of sight awaits you. If you ever find yourself looking for this ancient town, you can travel to it from Costa del Sol or Malaga. In the past, this town played a major strategic role due to its high elevation, which made defending it from invaders a lot easier.

Participants wearing costumes walk along a main street during a Halloween Parade in Marikina city, east of Manila, Philippines, on October 30, 2014. (Photo by Romeo Ranoco/Reuters)

In this Thursday, March 17, 2016 photo, 33-year-old Palestinian clown doctor Alaa Miqdad, left, entertains 3-year-old patient Yaqin Shawaf, who suffers from dialysis, in the department of kidney diseases at Al-Rantisi children's hospital in Gaza City. (Photo by Adel Hana/AP Photo)

Built for over a million people, the city of Ordos was designed to be the crowning glory of Inner Mongolia. Doomed to incompletion however, this futuristic metropolis now rises empty out of the deserts of northern China. Only 2% of its buildings were ever filled; the rest has largely been left to decay, abandoned mid-construction, earning Ordos the title of China's Ghost City.

An Israeli policeman prevents a Palestinian man from entering the compound which houses al-Aqsa mosque, known by Muslims as the Noble Sanctuary and by Jews as the Temple Mount, in Jerusalem's Old City September 28, 2015. (Photo by Ammar Awad/Reuters)

A man wearing a Pikachu hat, a character from Pokemon, plays Pokemon Go during a gathering to celebrate “Pokemon Day” in Mexico City, Mexico August 21, 2016. (Photo by Carlos Jasso/Reuters)

Chefchaouen or Chaouen is a city in northwest Morocco. It is the chief town of the province of the same name, and is noted for its buildings in shades of blue.