These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

If a glacial river suddenly diving into a sheer chasm via a dramatic, multi-stage waterfall isn't peak Iceland, it's certainly close.

This valley of hot springs and boiling mud pots is home to the record-holding "Geysir," which originated the English word.

The most powerful waterfall in all of Europe.

This elegant arc of a waterfall marks a religious turning point.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

This fantastical waterfall is hidden in a cave located in a cracked cliff.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

Rising from the sea like a stone monster.

A small Wyoming town is home to the state's oldest-operating soda fountain.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

From failed port town to Civil War fort, the ruins of this former defense saw their finest day in the television age.

This handcrafted, old western-style town is filled with deserted cars, retired movie props, and other forms of Americana.

A painfully obvious spy house sits right across the street from the Russian Embassy.

A line of blue paint marks the route of the inaugural parade.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

Rows of stone statues are dressed up to mourn children that are lost before birth.