This Bronze Age tomb is the centerpiece of a clearing within a beautiful Irish forest.

There might not be much left of these Irish ruins, but their linguistic legacy is still going strong.

A corkscrew-shaped barn in Ireland.

A nun spent 16 years painting the stunning Celtic mural that covers the interior of this WWI memorial.

The Grand Lodge of Ireland is one of the oldest in the world, full of fantastical, elaborately themed rooms.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

Obelisks and stone pineapples in the Irish countryside.

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

Elaborate tile work in this railway station tells the story of Portugal.

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

Ancient catacombs form the foundation for this Rococo orgy of a church.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

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

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

One of the holiest Shi'i shrines in Iran honors the life and death of a learned noblewoman who became a saint.

The cathedral stands in New Jufa, Isfahan's Armenian quarter that was established in 1606.

A graveyard of old and rare planes that once were the glory of Persian aviation.

Two Chinese dragons guard the caves of this medieval temple in Iran.

This lake in northwest Iran has started turning from green to red more frequently than scientists are comfortable with.

This steamship has been beautifully rusting off the coast of an Iranian island since the 1960s.

This 17th-century structure is a beautiful testimony to traditional Persian architecture

This circular Iranian jail was once a political prison run by the country's secret police.

A historic trade hub teeming with gorgeous architecture, colorful goods, and vibrant designs.

The hottest, driest, and most scenic desert on Earth.