Hivemapper - Build maps that reveal changes 🌏
Meetup - Helps groups of people with shared interests plan events and facilitates off line group meetings in various localities around the world.
Google NightWalk - An audio Streetview tour around Marseille
Event Hunt - Startups and Tech Events Curated By Locals
Urban Jungle Street View - Explore the world through Google Street View: Jungle Mode
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets