Arches

The remains of a convent turned military barrack in the heart of Madrid.

This remote Colorado canyon is home to the second-largest collection of natural arches in the world.

This unique structure is the only one of its kind in Virginia.

When new viceroys were elected, they passed through this arch to cement the title.

A triumphal steel arch on the side of a German mountain.

An impressive bridge over a ravine also served as an aqueduct.

This magnificent arch is all that remains of a former smelt mill.

Atop this arch, during the 16th-century, a sermon was given to those suffering from plague.

It's safe—and permitted—to walk across these twin natural sandstone arches.

This striking arch, one of the first architectural elements constructed in Prospect Park, was recently restored to its original glory.

Tucked between a side street and a theater, this arch once led to a prestigious riding school, and now opens to a courtyard and community garden.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

This plaza is home to a number of works, including Montpellier‘s own Arc de Triomphe.

The bridge continues the legacy of President Franklin D. Roosevelt's New Deal policy.

One of the two original gateways into the Kasbah, this gateway is a nesting site for storks.

This Roman monument is surrounded by more recent construction, offering a stark contrast between ancient architecture and the modern urban landscape.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.