A hidden three-foot-wide house separates these two regal churches.

Eat the ultimate iteration of Portugal's most beloved pastry.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Portugal's National Pantheon has a history of curses, collapses and financial problems.

The best place in the world to buy tinned fish.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Entire apothecaries are on display at this Lisbon museum, which explores the history of medicine.

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

An L.A. traffic island where the faces of locals have been carved into massive granite eggs.

Once the central jail for Los Angeles, this building housed inmates like Al Capone, those arrested from the Zoot Suit and Watts Riots, and individuals imprisoned for their sexuality.

These enormous, stern-faced statues greet visitors with lanterns, and sometimes costumes.

An abstract monument to a symphonic composer.

A 50-foot tile mural mosaic for the 100-year anniversary of the Statue of Liberty.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

A faux European lane smack dab in downtown L.A.

The legendary building that needed ghostly approval before being built.

Once a purveyor of Santeria supplies, religious products , and household sundries, now closed.

This iconic L.A. bookshop is housed in an abandoned bank—both symbolic and chic.

Inside this library, the history of Los Angeles is retold through a mural.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

Historic funicular railway, believed to be the shortest railroad in the world.

A visionary, futuristic sculpture in Los Angeles that never met its extraterrestrial potential.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.