A wonderfully strange collection of 500+ stuffed frogs doing people things.

Longest fortress system anywhere in Europe.

The oldest arboretum on the Dalmatian coast doubles as the gardens of Kings Landing in "Game of Thrones."

The now-overgrown beach resort was once frequented by Yugoslav military elite.

This Croatian island is for sale but no one is buying due to the dozens of accused Nazi sympathizers who were massacred there after WWII.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

Inside this mansion turned museum, the works of prominent Croatian artists are on full display.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

A full figure 4th century incorruptible saint lies in a glass coffin in Croatia.

An ancient knight and a symbol of the city's freedom.

This 15th-century church houses priceless works of art from a range of Croatian artists.

Gargoyle head that brings good luck.

Temporary Burning Man sculpture made of two 18-wheelers.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

The one-stop shop for all of your superhero (or evil arch-nemesis) needs.

A New York garbage depot holds a secret collection of weird and wonderful refuse.

Elevated freight railway turned wildly successful urban park.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

An obscure federal monument honors the French diplomat who served as Ambassador to the U.S. during WWI.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

The school tested mustard gas for the U.S. Army during World War I.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.