Qatar's oldest market can trace its origins back more than a century.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

This huge pile of volcanic boulders hides a stunning network of secret grottoes.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

The house where the famed outlaw was shot by a dirty coward is now a museum to the criminal's legacy.

This seemingly charming home memorializes and honors the victims of a century-old unsolved murder.

An ornate Art Deco tile mosaic representing Nebraskan life, both modern and prehistoric.

Performers, intricate sets, and a real speakeasy tell the story of the 18th Amendment.

This quirky curiosity shop takes its cues from the world's bazaars.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

Remarkably realistic Florida shoal bass "swim" inside this large globoid sculpture.

A different kind of swan princess.

Legend tells how a Spanish soldier disappeared from this isolated sentry box without a trace.

This colorful gate stands as an entrance to the walled city of Old San Juan.

After Christopher Columbus died, his son built a fancy house to rule from.

The first official clock in North America, it kept time for the Spanish government of Santo Domingo.

Built in 1512, the oldest cathedral in the Americas.

A collection cataloguing one of the most brutal dictatorships in modern history.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

On a clear day, you can see all the way to the Virgin Islands from the top of this observation tower built in the 1960s.

Archaeological sites and great food inside the island's largest mangrove forest.

This sustainable, family-run farm just outside of San Juan makes for a dreamy daytrip.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.