These beautiful garden buildings are among the oldest surviving greenhouses in the United States.

In the middle of a Vienna square, Roman ruins dating back some 2,000 years are on display.

An unassuming 13-acre park is home to over 12,000 roses.

A downtown park built on top of unclaimed graves.

At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

Two thousand artifacts from around the world collected by one woman who loved to travel.

One of the now-less-hidden floral gems of the "Emerald Necklace."

This lush 12-acre site was once named the finest Japanese garden in North America.

Straight out of a nightmare, barcode-faced babies climb up and down Prague's television tower.

This astronomical clock is the second oldest in England.

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

Beloved children's TV characters freckle the German city's streets.

The first modernist church in Europe.

In the Shawnee National Forest, amazing rock formations peer through the treeline.

A plaque marks the spot where the saint was shoved off the Charles Bridge and into the river.

According to the legend, this strikingly beautiful hill has miraculous healing powers.

This striking royal residence is the largest Renaissance-style castle in Scandinavia.

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Rare recess caves fill this unbelievably beautiful Ohio park.

The Tudor-style cottage in the middle of the square is not quite what it seems.

This well-preserved Cistercian Abbey in a romantic pastoral setting has inspired artists like the poet Wordsworth.

Fascinating town where normal life interfaces with the occult.

The television series' iconic giant foot was borrowed from this classical painting.