Once the foundation for a mansion, these ruins now offer amazing panoramic coastal views.

One Costa Rican island is so beset by illegal shark poachers that the local rangers have built an entire bridge with their confiscated gear .

Costa Rican accommodation resembles a crash site, but with a nice balcony.

A secret climbing tree hides along the side of a Costa Rican road.

Disused penal colony features prisoner artwork, some sketched in human blood.

These mysterious ancient stone spheres were created by a civilization lost to time and are now mostly lawn ornaments.

Where dogs like the rare "Fire-Tailed Border Cocker" run free on the mountainside.

This Costa Rican topiary park is a surreal garden of unearthly delights.

This neon blue river gets its color from a unique mix of bacteria and volcano minerals.

Sloth rehabilitation center in the jungle of Costa Rica.

Barcelona's only remaining tram system takes riders to the Tibidabo funicular.

One of Antoni Gaudí's least-visited works, an homage to Catalan patrimony that mixes neo-Gothic with Modernista forms.

Occupied for six centuries by Franciscan Order nuns, this monastery is an amazing ode to Catalán Gothic architecture.

This cafe offers a curated collection of treats and tipples made by monks and nuns.

One of Europe's largest supercomputers is housed inside of a disused chapel.

Turntable anonymously received orphans, alms, and groceries.

Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

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

An old-timey wax exhibition campily depicting New Orleans legends and scandals.

This relatively recently abandoned brewery is a tragic reminder of the continuing effects of Hurricane Katrina.

This historic New Orleans cemetery is the final resting place of members of the Independent Order of Odd Fellows.

A typical "Old South" manor, once owned by author Anne Rice, served as the setting for several of her witchcraft sagas.

The crumbling remains of a 19th century fortess.