This towering church is home to a world-famous organ and a treasure trove of medieval art.

A historic neighborhood church is reborn as a psychedelic arts collective.

Op-art architecture designed for happiness.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

The tallest waterfall in the Netherlands is a lovely, stepped feature that is only 50 feet tall.

This neolithic stone grave has been altered and restored so often its now more neo than lithic.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

The spectacular history of spectacles on display.