Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

An imposing pair of sphinxes stand guard outside this Egyptian Revival tomb.

This shop filled with oddities and knick-knacks is named for a 19th-century charlatan.

The legacy of baseball great Roberto Clemente is preserved in a retired Pittsburgh fire station.

With 3,000 bikes on display, the world's largest bicycle museum includes some famous rarities.

This secluded walking trail is a hidden gem of a Pittsburgh park.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

The only way to see Pittsburgh is from the top of this lookout point, just like the ancient members of the native peoples did.

This Old Testament garden features 100 plants from biblical times.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

An artist’s underground sanctuary, 40 years in the making.

This limestone cave offers an incredible view of the Río Grande de Arecibo valley.

This rock in the middle of a river in Jayuya contains dozens of Pre-Columbian Taíno petroglyphs.

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

La Cara del Indio honors the Taíno chief who fought bravely against the Spanish invasion of Puerto Rico.

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

Everyone from Alan Ginsberg to The Rolling Stones has stopped by this classic dive bar.

Drift through underground caves on a tube.

This community-driven organization uses education and eco-friendly technology to protect the environment.

The ruins of the first Spanish settlement in Puerto Rico.

An unnatural lake in a naturally beautiful setting.

An enchanting natural wonder in Puerto Rico's Camuy River Park.

This niche museum devoted to ancient religious artifacts is shaped like the very thing it displays.