The hallucinogenic center of the ancient world.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This 1,300-year-old marker is one of the finest and most complete early Christian crosses in Scotland.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

This $62 million dollar temple was erected to house one little dental fragment of religious history.

The names Lúthien and Beren can be found inscribed on the shared grave of the famous writer and his beloved wife and muse.

A little piece of Oxford's overlooked industrial heritage.

These ancient ruins were the final resting place of King Henry II's mistress.

Legend says this public grazing area hasn't been plowed for thousands of years.

This historic pub is a hidden gem for fans of Lewis Carroll.

The medieval legend behind this holy well was one of the inspirations behind "Alice's Adventures in Wonderland."

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

A beautiful bamboo trail tucked in this famous Japanese Shrine.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

This beautifully deceptive waterfall is something far different from what it appears to be.

These sacred Mesoamerican ruins feature peculiar petroglyphs hidden in the stones.

This Oaxacan town is known for its colorful fantastical creatures hand-carved by local artisans.

This amazing collection includes rare stamps from around the world, including fluorescent ones.

A mysterious pillar in an ancient burial chamber is said to predict how long you have to live.

The stoutest tree in the world.

One of the world's richest men bought this former paper factory and transformed it into a mall.

An Aztec temple, the largest man-made pyramid in the world, sits buried in earth with a Spanish church set on top.

The world's longest tunnel with an undersea section.