Rome’s legendary peephole vista is also a former Crusader stronghold.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This post-Ottoman era church in Athens was built by locals to serve the residents of Anafiotica

The home of Greece’s national poet sits crumbling in the middle of a popular tourist district.

The ruins of an ancient fortification wall sit in front of and underneath this boutique hotel.

This century-old, family-run bakery specializes in loukoumades, a Greek doughnut once served to ancient Olympians.

One of the best-preserved medieval streets in Europe.

This secret coastal village is studded with pastel-colored houses all piled on top of one another.

A spitting ode to a German serial killer.

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

The last fully working Victorian Turkish bath in England.

This 17th-century house has a long and colorful history.

A massive line that stretches across the floor of Bologna’s largest church was created by a 17th-century scientist to measure the movements of the Sun.

A monument to one of the most famous modernist Chinese poems and its poet.

The second oldest surviving house in Athens was owned by an Irish General.

A modern mini-Stonehenge is hidden in a public reserve, not far from a former Viking stronghold.

Denmark’s oldest bakery is home to the 'Wednesday Snail,' one of the best cinnamon rolls on the planet.

An ancient site that has revealed incredible artifacts including portions of the Themistoclean Wall.

The Lobotesis family has been baking some of the best savory pies in Athens since 1910.

This lesser-visited World Heritage site in Athens boasts an impressive ensemble of medieval gold mosaics.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

One of several Lilliputian portals that are ready to transport passengers to other dimensions, if they can find them.