Medicinal spa created with the discharge from a geothermal energy plant.

This wild explosion of color on a disused water tower tells the whimsical tale of a curious puffin.

Burke’s oldest cemetery also houses the victim of the county's grisliest murder.

A 14-foot monument marks the resting place of two of the town's earliest residents—and one unknown soldier.

The most historic church in Fairfax County played a role in the creation of the American Red Cross.

This Virginia railway overpass is said to be haunted by a serial killer in a rabbit costume.

A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

A graveyard that dates back over 200 years stands near a busy shopping center.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

The national park was once a plantation estate.

An overlooked memorial honoring the local Washington residents who died in World War I.

An extensive, if one-sided, history of U.S. law enforcement's war on drugs.

This super steep hike ascends 2,000 feet in less than a mile.

There are eight natural springs around town, each with a slightly different taste.

The span is crooked and made from two older recycled bridges.

A building shaped like the Army Corps of Engineers logo, because why not?

Vibrant street art created with mixed media.

Of the many chalices in the running for the Holy Grail, this one in Valencia Cathedral sure looks the part.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Among the oldest structures in Madrid, these Moorish walls once guarded the medieval city of Mayrit.

The only urban monument in the world designed by the great surrealist painter Salvador Dalí.

A beloved, quirky little fountain featuring a large frog spitting water at a naked boy.

This historic electric train has operated with regularity since the early 1900s.

A contemporary art installation housed within a Gothic cathedral.