The remnants of Peoria's proud baseball past stand slightly abandoned, but not forgotten.

These Depression-era WPA sculptures have made a couple of stops over the years.

This remote island in Iowa was abandoned after being devastated by flood.

One of two identical monuments marking the sites of military training encampments in Peoria, Illinois.

The final resting place of the world's first nuclear reactor.

A small abandoned and abused cemetery that has become a magnet for ghost hunters.

This historic Illinois "Muffler Man" has been converted from axe-touting lumberjack to rocket-wielding space ace.

This easily overlooked memorial immortalizes the scars from the 1956 Hungarian Revolution.

The world's oldest known salt mine.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

This walkway is so narrow it needs its own light to stop pedestrian traffic jams.

The palace window through which Protestant nobles flung two Catholic regents, thus sparking the Thirty Years' War.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

A line of disused military bunkers built to defend against Nazi invasion lies hidden on the outskirts of the city.

A replica of the decorated wooden pillars Viking sailors threw overboard when finding new places to establish a settlement.

The final resting place of the controversial chess champion.

This oceanside Reykjavik spot is speckled with recycled sculptures and large stones.

This verdant, tree-lined Reykjavik graveyard is both enchanting and eerie.

Iceland's tribute to its thankless civil servants.

Inside this Icelandic greenhouse, geothermal energy keeps tomatoes warm and growing.

Cairns built to bring travelers good luck stretch across the land like miniature stone mountains.

A bit of the Berlin Wall was gifted to the Icelandic capital to commemorate the 25th anniversary of German reunification.

Twisted girders are all that remain of an Icelandic bridge that was wiped out by a combination of volcanic heat and glacial floods.

Icelandic folklore says this giant boulder was ripped from the mountains and placed at its current location, where it became home to elves.