An emporium for the weird, creepy, rare, and just plain gross.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

This castle has links to Portugal’s founding and struggles for independence.

An abandoned tuberculosis hospital said to be haunted by the patients who died within its walls.

A small but charming botanical garden that contains many exotic plant species.

This now abandoned restaurant provides some of the most amazing views of Lisboa.

This unassuming chapel in Portugal plays host to a ghoulish collection of bones.

Building owners can take out tiles for free at this repository for historic building materials.

A windswept necropolis carved into the rocks overlooks the "most Portuguese town in Portugal."

Men in rubber-soled boots serve as your "brakes" on this toboggan ride Hemingway described as "exhilarating."

Perhaps the most spectacular grotto along the Algarve coastline.

"Portugal's Stonehenge" is made up of nut-like stones aligned with the heavens.

When Azorean green tea meets volcanic hot springs water, a luminous brew is born.

In Portugal, a secluded stretch of untouched natural beauty hides at the bottom of a steep hill.

A small Portuguese cottage formed between boulders in the countryside.

An early work of the architect Álvaro Siza Vieira, these swimming pools blend into the beach.

The verdant mossy ruins of a Franciscan monastery lie in the remote Sintra hills awaiting exploration.

Ring the bell to enter a bar that looks equal parts museum and old curiosity shop.

The stunning interior of this Gothic church is covered in ornate gold details.

This gaping hole in the middle of a remote mountain lake looks like a portal to another dimension.

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

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

The crumbling remnants of this 19th-century quarantine hospital hint at the touristy island's darker past.

On a small Puerto Rican island, banks of secret naval bunkers lie abandoned and filled with piles of office equipment.