Resting on a hill overlooking the coast, these medieval ruins look completely deserted save for their restored chapel.

Napoleon's childhood home is now open for people to explore the beginnings of France's short general.

This remarkable checkered church on a Corsican hilltop is fabled to have been built by angels.

This statue honors the thousands of Allied avians that served and died for France during World War I.

Tables of secondhand books fill the inner courtyard of this 17th-century stock exchange.

The first modern cemetery of Lyon is complete with more than 200 chapels and monuments.

Hundreds of hidden passageways weave through the old quarters of Lyon.

For hundreds of years, automatons moving to metallic music have been marking the passage of time.

Lyon, France is home to two remarkably preserved Roman theaters, one dating back to 15 BCE.

This abandoned church in central Lyon is missing its front stairs.

Lyon's "Wall of the Silk Weavers" is one of the largest murals in Europe.

Lyon's miniature version of the Eiffel Tower was built as a statement in support of French secularism.

This hidden garden boasts amazing views of Lyon.

A colorful piece of contemporary art cheerfully clashes with Lyon's historical architecture.

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

The last of Amsterdam's original sea level markers remaining in place.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A floating cat sanctuary on an Amsterdam canal.

The former headquarters of history's oldest megacorporation.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

This unattributed sculpture in Amsterdam is hiding in plain sight.

This plaque marks the former home of one of the first women physicians in the Netherlands.