Denmark's famous pseudo-hill.

A tiny park off the beaten path covered in ingenious scrap metal sculptures.

This monument to those fallen in the World Wars is accompanied by a U-boat that Germany bought for a Deutsche Mark.

Four alabaster giants contemplate the tides on the shore of Denmark.

Thousands of well-dressed mummies below a monastery.

An old slaughterhouse now holds the largest collection of pig artifacts.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

Bring out your dead (saints that have been festooned and bejeweled, so that we can parade them around the town)!

Massive installation of Europe's negative stereotypes.

An unfinished tomb carved into a giant boulder in the Arabian Desert.

An abandoned town of skeletal wooden homes.

Stunning examples of Russia's 18th-century wooden architecture.

Lithuania's outdoor sculpture trail of wooden folk art.

Surreal riveted sea forts once protected the Kent shores from German attack.

Ukrainian defense contractor's center for studying "pyramid energy."

This former quarry is now a picturesque gorge that hides a sunken lake.

Queen of the waterlilies, so big and strong it can support the weight of a human.

Former prison camp dedicated to the victims of political repression.

Abandoned castle was once a grand example of Russian privilege, built exclusively to win a frivolous bet between noblemen.

A fortress built to pacify local uprising that had a stint as a Nazi concentration camp before becoming a five-star hotel.

World's largest crossword puzzle spans the side of a towerblock, its clues scattered throughout the city.

This beautiful natural train tunnel is said to grant the wishes of visiting lovebirds.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

This Polish cave has housed a dragon, a brothel, and an enduring legend.