Some 50,000 people visit St. Peter’s Basilica in Vatican City daily. The 500-year-old structure, with its 448-foot-high dome, ...

The distinctive domed building, turning 50 this year, is known for hosting the Super Bowl, but to locals, it’s also “the city ...

The origin of Upheaval Dome in Utah remains debated, with theories ranging from a meteorite impact to underground salt ...