Since Philadelphia is arranged on a grid system, the mostly one-way roads are easy to navigate. Helpful maps are posted along street corners across the city – watch for the "Walk! Philadelphia" signs ...

Athens sprawls across the Attica Basin, a valley surrounded on three sides by mountain ranges and on the fourth by the Saronic Gulf. Constant expansion has introduced a sense of modernism to this ...

We independently review everything we recommend. When you buy through our links, we may earn a commission. Learn more› By Mari Uyehara and Samantha Schoech The thrill of seeing one’s name emblazoned ...