This ''hidden'' 19th-century bridge played a simple, yet important role during the Spanish-American War.

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

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

Dakota legend claims this locally iconic pinnacle was once part of a sacred burial site that was cleaved in two.