Norway's oldest cathedral still in use.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

A natural wonder in south Denmark.

Old Danish castle immortalized in Shakespeare's Hamlet.

These stark white cliffs were spat up by the sea and are slowly being retaken by it.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

Despite centuries of architectural innovation, this French castle is being built like it's the 13th century.

Abandoned railway line circling the city of Paris.