You cannot visit Grenoble without being reminded of the author Stendhal. His book "The Red and the Black" contains impressions from his early years in the city. In the museum there are manuscripts, documents, portraits and memorabilia from his life and career.

One of the highest bungee jumps in Europe, the Ponsonnas Bridge cuts through rare natural beauty, and offers those so inclined the opportunity to plunge into a 103-metre free fall. The bridge is about an hour south of Grenoble. If you are looking for an extra dose of adrenaline during your vacation, this is the place to go.

You can find free walking tours in most major cities, and Bogotá is not an exception. Most guides will take you through the historic centre of La Candelaria — the creative hotspot of the city set in the winding cobbled streets. You will learn about colonial houses and baroque churches, Colombia's colonial and indigenous past, striking graffiti and the impact of the Colombian drug trade. The most popular free tour is organised by Gran Colombia Tours, but check the link below to find a tour that fits your interests best.

Tens of millions of red land crabs live on Christmas Island. They are the Island's keystone species, because they play a vital role recycling nutrients and shaping and maintaining the structure of the rainforest. At the beginning of the wet season (usually in October/November), most adult Red Crabs suddenly begin their spectacular migration from the forest to the coast, to breed and release eggs into the sea. Breeding is usually synchronised island wide. The rains provide moist overcast conditions for crabs to make their long and difficult journey to the sea. The timing of the migration breeding sequence is also linked to the phases of the moon, so that eggs may be released by the female Red Crabs into the sea precisely at the turn of the high tide during the last quarter of the moon. It is thought that this occurs at this time because there is the least difference between high and low tides. The sea level at the base of the cliffs and on the beaches, where the females release their eggs, at this time varies the least for a longer period, and it is therefore safer for the females approaching the water's edge to release their eggs. Sometimes there are earlier and later migrations of smaller numbers of crabs, but all migrations retain this same lunar rhythm. The main migration commences on the plateau and can last up to 18 days. Masses of crabs gather into broad "streams" as they move toward the coast, climbing down high inland cliff faces, and over or around all obstacles in their way, following routes used year after year for both downward and return migrations. Movement peaks in the early morning and late afternoons when it is cooler and there is more shade. If caught in open areas, in unshaded heat, the crabs soon lose vital body moisture and die. The crabs will migrate to the coast, where the males will dig mating burrows and they will mate. After mating, the males will commence their return migration. The females will brood their eggs for 12-13 days before emerging from the burrows to commence spawning. The females will commence their return migration immediately after spawning. The eggs hatch into free swimming larvae immediately after they are dropped into the sea. The larvae grow through several stages in the ocean for over four weeks before emerging from the sea to become tiny crabs.