A chain of 16 wondrous lakes formed as a result of the gradual dissolution of soluble layers of bedrock.

This slowly crumbling mansion was home to one of East Africa's richest and most powerful slave traders.

This one-time health resort was used by aristocrats around the world.

The largest greenhouse in the world is home to over one million types of plants.

400-year-old garden, restored to beauty.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

At high tide, the base of the lighthouse covers practically every inch of the island.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

Everything from a plane to your own two feet are needed to reach this jungle resort.

One of the largest Buddhist stupas in the world keeps an eye out in every direction.

Sacred Buddhist home of some spiritual monkeys.

An expansive complex of subterranean tunnels is all that remains of one of Europe's most formidable medieval fortresses.

Museum preserving torture methods from the past.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Copenhagen's celebrated theme park and gardens.

It houses the remains of a 17th-century version of the Titanic.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

An alien church provides much needed silence in the midst of a Finland shopping center.

A subterranean house of worship carved right out of the bedrock.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

"There's nothing there," and other lies the KGB told us.

The oldest housing complex in Riga is a mini timeline of architectural trends.

A black cat protests the City Guild in Riga's Old Town.