Slip in a slide while waiting for the ferry.

The niches over the western entrance of Westminster Abbey honor individuals from the 20th century who gave their lives for their Christian beliefs.

Atop an active stratovolcano, two lakes separated by a narrow strip of land.

In the high desert east of Bend, the University of Oregon maintains a research observatory on a remote mountain peak.

London’s first road overpass is so old that it was originally built for horse-drawn carriages.

The burial ground of two kings and a queen is now a calm city park in the middle of bustling Seoul.

The ruins of a failed dam that was built over land later described as a "sponge."

Legend holds that this knife serves as a chilling reminder of the deadly rivalry between two local builder brothers.

A well-worshipped shrine to the Virgin Mary nestled inside the last of Zagreb’s historic gates.

The final resting place of the dictator of Taiwan.

This distinctive blue and white jet fighter is a symbol of the area’s relationship with aviation.

One of the oldest Christian churches still standing in the Americas, and almost certainly Mexico's oldest in continuous use.

First established in 741, this is one of the oldest Taoist temples in China.

This market built by German World War I prisoners is made of local stones.

This glass wall is gradually filling up with paper cranes, in honor of Hiroshima’s past and dedication to its future.

This sculpture was made out of recycled guns that were turned in to the city.

A monument dedicated in memory of the over 100,000 civilian deaths during the liberation of Manila in World War II.

Ruins from the Parthenon and petrified wood line the interior of one of the world's most famous monuments.

When this monument to Slovenia's national poet was erected, it's said to have sparked the ire of nearby church authorities.

Its humdrum facade only adds to its electrifying appeal: a rooftop with panoramic views of a shapeshifting metropolis.

A pair of oily black spiders lurk inside South Korea's largest airport.

In the upscale neighborhood of Miraflores in Lima, a pretty little park is home to dozens of cats.

Children’s timeless joy is remembered in the fast-developing Myeongdong district of Seoul.

Tracking the 1,500-year history of Korea's star cabbage.