Upcoming:

Lanzarote (03 2019)

Destinations I'd like to visit in the future in no particular order:

Banff National Park (Canada)

Mount Assiniboine Provincial Park (Canada)

Parque Nacional Torres del Paine  (Chile) (W-Trek)

La Ruta de Pedra en Sec (Mallorca, Spain)

Causeway Coastal Route (Ireland)

Wild Atlantic Way (Ireland)

Mljet, Plitvicer Lake National Park, Velebit Mountains and Krka National Park (Croatia)

Bealach na Bà (Scotland)

Mt. Hood National Forest (Oregon, USA)

Kilimadscharo (Tansania)

Salkantay Trail (Peru) 

Cascades du Hérisson (France)

Valensole Plateau (France)

Pouakai-circuit (New Zealand)

Routeburn Track (New Zealand)

Pieniny Nationalpark (Poland/Slovakia)

Gaztelugatxe (Spain) 

Santorini (Greece)

.

.

.

and a lot more :-D

Things I'd like to do in the future in no particular order:

Kite surfing

Diving license

(Co-)Driving a lap in the green hell

Things I've done:

Wind surfing license

Bungee jumping

Sky diving

Wake boarding

Snow boarding

Skiing

Hot air ballooning

Downhill mountain biking Harz (here)