Perhaps the most spectacular grotto along the Algarve coastline.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

The extravagance of Portugal’s "Pink Palace" resulted in a noble title being awarded to its owner.

This small chapel is built of human bones and decorated with a golden skeleton.

This museum documents the ancient practice of salt production in Figueira da Foz.

A deer-headed statue that brings together a 12th-century legend and big wave surfing.

Nicknamed "Karri Knight," this Eucalyptus was planted in 1895 and stands at 72 meters.

One of the oldest universities in the world exhibits thousands of specimens from its 700-year-old collection.

A Portuguese museum display features a bizarre assortment of objects.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

The stunning interior of this Gothic church is covered in ornate gold details.

A hidden three-foot-wide house separates these two regal churches.

A small but charming botanical garden that contains many exotic plant species.

Iron Age runes and ruins hide in plain sight along this Portuguese beach.

This castle has links to Portugal’s founding and struggles for independence.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

A replica of the Roman emperor in glorious full color.

A fortified palace in the shape of a ship on the Thiou river.

This whimsical castle of grottoes was the labor of love of a French postman, and one of the greatest achievements of outsider architecture.

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

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

After decades of damage, this feat of timekeeping and automaton art has been given a new lease on life.

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

Monsters and miniatures are held in equal esteem at this wondrous museum.