The last Victorian market in Belfast.

A medieval abbey featured on 'Game of Thrones' that dates back to the 12th-century.

A giant sculpture of the legendary "Salmon of Knowledge" celebrates the return of fish to Belfast's River Lagan.

A palatial former bank building now houses what may be the poshest art venue (and former Tesco) in Belfast.

Belfast's namesake river still winds below the city center, hidden from sight.

A brisk climb up this solitary peak leads to the origin story of a towering figure in Irish history.

For part of the year, this innovative greenhouse is painted white to keep the plants from getting scorched.

The highest peak in Northern Ireland is topped with a stone tower and haunting burial mounds.

This tiny train shuttles passengers to one of Northern Ireland's most spectacular sights.

This Italian-style temple replica has been threatening to fall off the Irish coast for hundreds of years.

A peace symbol in Northern Ireland is among the world's largest hedge mazes.

A collection of huge, site-specific sculptures sitting in the Montana woods.

The burning of this 12th-century church kicked off a campaign of Norwegian Black Metal terror.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.

An impressive museum dedicated to the resource that made the Scandinavian country rich.

A reconstructed farm shows what life was like in Norway 1,500 years ago.

Norway's oldest cathedral still in use.

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

The people murdered during a 17th-century Norwegian witch hunt have been honored with a pair of stark, modern installations.

Walk behind a 50-meter-high waterfall.

The ruins of this medieval castle in Northern Ireland have inspired artists from C.S. Lewis to Led Zeppelin.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.