The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

Wall to wall taxidermy at Denver's oldest and most exotic steakhouse.

Once America’s most beautiful army base, this abandoned military fort on the coast of Monterey Bay has been left to the elements.

An old whaling station now serves to give the public a look at the commercial whaling industry, no longer a part of Monterey's economy.

This remarkably simple jail went over a century without an escape.

The oldest U.S. Government building in California, and it's State Historic Landmark #1.

Holy Grotto of Montserrat Monastery holds one of Europe's mysterious black Madonnas.

A walk through the historic city center, under the streets of Seattle.

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

Fortified medieval tower house with lovely roof garden.

A temple to modernity, tucked away amid Barcelona's more well known museums.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.