Hidden treasures often lurk in the most unexpected places, and tucked away in Allentown sits Ritz Barbecue, where the country fried steak might just be Pennsylvania’s best-kept culinary secret.

Central Diner & Grille in Pittsburgh is that hidden gem where locals have been quietly enjoying one of Pennsylvania’s most magnificent grilled cheese sandwiches for years.

Sensitively nestled among the lush treetops of the Costa Rican jungle, Studio House is an example of architecture seamlessly ...