Usually, it’s Pastéis de Belém that snags the lion’s share of accolades for Lisbon-made pastel de nata. But, the egg custard tart at Confeitaria Nacional, purported to be Lisbon’s oldest pastry shop, is also worth devouring. Located near Rossio Square, it has been going strong since 1829, and still the Castanheiro family (now in its sixth generation) abides by original recipes for specialties like its candied fruit and nut-studded Christmas-time Bolo Rei ring cake. Just as appealing as Confeitaria Nacional’s delicacies—chocolate-slathered croissants, crescent-shaped meia lua teacakes, and orange tarts among them—is the ornate, old-world décor featuring a mirrored ceiling and dreamy, curved staircase.