Louise Bourgeois' 30-foot-tall steel spider sculpture.

These prehistoric replicas were based on actual skeletal remains.

These locks on North America’s oldest canal are named after a porcine rock formation.

Soaring over the Niagara Whirlpool since 1916.

This impressive working clock made of 16,000 plants changes its flowers twice a year.

This seemingly cursed monument is dedicated to one of Canada's great war heroes.

Legend says that this short Canadian tunnel still holds the dying screams of a girl who burned alive.

This Niagara Falls tourist trap is a world bright with neon and curiosities that will inspire love, hate, or a mixture of both.

A tunnel that brings more than a century of history to life from the deepest parts of the Niagara Gorge.

Niagara Falls holds a special place in Nikola Tesla's history, so they put a statue on it.

A historic observatory now an astronomy museum beautifully situated at the moat of the Middle Age city centre.

This still-celebrated home was a radical architectural experiment in 3D De Stijl.

Underground attraction offering tours of the foundational ruins of a church nave that collapsed in 1674.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

Atop this former dutch railway office sits an interstellar work of art.

A uniquely preserved neo-Gothic church that is now home to a collection of art and woodcarvings.

The largest airborne operation in history was launched to capture this bridge.

Organisms normally seen under a microscope decorate this church.

A late-medieval Dutch castle with trick fountains in its whimsical water gardens.

A set of beech hedges planted in the 19th century forms a tunnel that takes on a different appearance in every season.

An idyllic hotel that gave its name to a supposed shadow government.

This giant radio telescope would be a rusting ruin if it hadn't become such a beloved relic.

This beautifully designed star-shaped fort was the premier defense system of the late 1500s.

Secret Swing.