A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

The last remaining site of Yoruba worship of the fertility goddess.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.