This old-school café is famous for serving coffee, chilaquiles, and the Cuban Revolution.

These biodiverse university gardens form a green oasis amid the urban chaos of Mexico City.

Diego Rivera's massive tiled fountain and failed infrastructure project.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

66,000 pieces of art, donated by one of the world's richest men.

This shrine is an ode to the region's rich Hispanic heritage.

An abandoned sawmill from more than 134 years ago stands testament to the ambition of one man.

Up-close opportunities to see working birds of prey.

Two tall rocks sit at the center of this site, once the home of a large Ancestral Puebloan community.

The first railway tunnel to cross the Continental Divide and, at 11,523 feet, was once the highest railroad tunnel in the world.

This gallery is home to everything from antiques, to ancient tribal masks.

The narrow mountain road that carves a path between Florence and Victor is tied to ghost towns and ghost stories.

Take a self-guided tour through one of Colorado's most elevated mining districts.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

A glimpse of a waterfall is reached by a steel catwalk along a slot canyon located in an Ouray city park.

Isak Heartstone, a 15-foot wooden troll made out of recycled materials.

All that remains of this once-booming mining town are the ruins of a saloon.

Inside this casino, visitors are treated to slot machines and a rare German Christmas pyramid.

This National Natural Landmark is one of the best examples of a “mass wasting” in the world.

Paleoamericans built these ancient walls high in the Colorado Rockies as part of an extensive hunting system.

A unique arch graces the Dolores River Canyon near the Hanging Flume.

This marker identifies the location where three states converge.

This nearly abandoned town was once a thriving mining community until a series of fires.

A tiny nondenominational church harkens back to the days of the first homesteaders in the region.