This peculiar border irregularity is the only way to legally enter Russia without a visa.

Hundreds of small crosses have been carved into the bark of the trees outside this small Estonian village.

A former top secret military tunnel is now stuffed with snow and open year-round to skiers.

This abandoned fighter jet launch center is now a haunting street racing course.

This strange building looks like a medieval fortress crashed into a 1960s Brutalist office block.

This is what trains will look like after the zombie apocalypse.

This amazing abuela became a diehard metal fan late in life and an icon of Madrid's '80s rock scene.

The rustic cabin-like decor of this Arts and Crafts-style church reflects the love of nature central to its little-known theology.

A century-old network of freight tunnels underneath the city's historic business district.