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

Where members of the Crossbow Corps of San Marino demonstrate their skills.

Geometry and mystery come together in an epic show of octagonal masonry.

A whimsical Renaissance fountain sculpture from Florence, world-renowned for defying convention.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

Study the Alien etchings in this fountain while you refill your water bottle.

A highly-criticized monument in Budapest has become the site of a makeshift Holocaust memorial.

A much-loved sculpture depicting the hero of a 1956 anti-Soviet uprising.

The metal leaves on this tree are engraved with the names of Holocaust victims.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

A 19th-century artistocrat's mansion, turned into a library, hidden in a modern library.

The bronze creation commemorates the life and work of a beloved actor.

The largest statue of this convex, homogeneous object with just one stable and one unstable equilibrium point.

Twelve towering statues once destined for Pécs Cathedral, now sheltering under arches.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

This tomb of a Sufi mystic is a remnant of Ottoman rule in Hungary.

Stuck in the arcade of Casa Isolani are three arrows of mysterious origins.

The fountain marks the area where hundreds of accused witches were burned at the stake.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

This lurid German fountain plots the sad course of marriage from dating to death.

The oldest church in Inverness witnessed the brutal executions of many Scottish soldiers.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

The most loyal of little dogs, or a Victorian era publicity stunt?