Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

There are hidden patterns on the subway seats of some Stockholm metro cars.

A water reservoir disguised as a castle stands atop a hill in a park in Stockholm city.

One of the world's first dedicated bank buildings in the world is now the oldest one.

This hole formed by a glacier is the largest and best-preserved of its kind in Stockholm.

This tree was once used to calculate the decrease of the Baltic Sea.

This stone obelisk is a relic of the 17th-century Swedish mile markers.

Part of an abandoned19th-century fortress hides in plain sight inside a modern office building.

A traveling Bronze Age sacrificial stone that was used to honor elves, fairies, and other woodland spirits.

A temporary art piece to celebrate LGBTQ Pride is now a permanent part of Stockholm's traffic landscape.

The three colorful women depict characters from a beloved children's story.

The final resting place of the man whose name has become synonymous with greatness.

Inside this church, a monument honors the first burial site of the famed philosopher.

This unique sculpture is often overlooked by pedestrians.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

The apartment where Pippi Longstocking came to life.

Small Easter eggs are hidden in the ventilation holes of the city's newest trains.

A Stockholm metro station is home to an escalator that is not only the longest in Sweden, but among the longest in the world.

The Swedish flag over this small naval fort signals that the nation is at peace.

Stockholm's last remaining paternoster elevator.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

An 11th-century runestone decorates the halls of Terminal 2 of this Scandinavian travel hub.

A king's bloodstained shirt is among the gruesome collection of artifacts displayed below Stockholm's Royal Palace.