A reservation-only highland forest reserve of endangered Pinsapar firs stands above a village in Andalucía.

This Moorish fortress has guarded Málaga from the slopes of Gibralfaro hill for nearly a thousand years.

The gardens and chambers of this Moorish citadel conjure memories of the Alhambra.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

One of the most spectacular bridges in Spain spans a narrow chasm that divides the city of Ronda.

The ruins of a 2,000-year-old Roman fishing village perched on one of the best beaches in Spain.

Visit 17th-century ruins on a strikingly beautiful riverside walking trail.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Engineering ingenuity during the battle of Gibraltar.

Many of the tombs contain victims of yellow fever epidemics.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Built for an exposition in 1915, these horticultural displays have stood the test of time.

One of the largest trees of its kind in California.

The California capital city once stood 10 feet lower than it does today.

This 19th century train workshop is a treasure trove of railroad history.

Before it was abandoned and left to rust alongside the road, this riverboat starred in a John Wayne movie.

Around the perimeter of San Francisco’s second-largest park is a meandering 2.7-mile path designed to inspire contemplation.

A quiet marker in memory of local men and women lost in WWI.

A hidden gem, named after a San Franciscan icon, offers spectacular views of the Pacific Ocean.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

One of the smallest parks in San Francisco honors the legacy of the "Mother of Civil Rights in California."

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.