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

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This dazzling Buddhist temple was constructed from over one million ceramic tiles salvaged from a British shipwreck.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

A floating cat sanctuary on an Amsterdam canal.

Started as a kitchen garden, now the second largest botanical garden in the world.

The vast, legendary catacombs hold secrets much stranger than stacked bones.