Modern art commemorates one of the first military actions of World War II.

Many of Edinburgh's more unsavory characters spent their final days behind this door while awaiting their executions.

A bronze statue of a low three-legged seat commemorates a piece of furniture that started a riot.

A ceramic postbox where visitors can post original poems and creative messages.

This hat-shaped fountain pays tribute to a centuries-old textile tradition in the Yucatán Peninsula.

Sample sweets at an Art Nouveau candy shop that's been in business since 1874.

The remnants of a facade from a 19th-century market stall emporium.

Small museum dedicated to the founder of electromagnetic theory.

Even though some of the buildings date back to the Victorian era, this research institute is still involved in cutting-edge astronomy research.

These sculptures of various animals adorn the building that houses one of the capital's least known museums.

The longest staircase lock in Britain.

A replica of one of South Korea's National Treasures stands as a tribute to that country's relations with Mexico.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This heart-shaped island looks substantially less lovely after a recent bulldozing project.

Large, airy hallways hide within an impenetrable fortress that beckons urban explorers.

This unique structure allowed boats to bypass underwater mine barriers in the channel to enter the harbor.

An ancient knight and a symbol of the city's freedom.

A full figure 4th century incorruptible saint lies in a glass coffin in Croatia.

Gargoyle head that brings good luck.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

This 15th-century church houses priceless works of art from a range of Croatian artists.